List of all CoLab Publications
2022
Vicovaro, Michele; Dalmaso, Mario; Bertamini, Marco
Towards the boundaries of self-prioritization: Associating the self With asymmetric shapes disrupts the self-prioritization effect Journal Article
In: Journal of Experimental Psychology: Human Perception and Performance, vol. 49, pp. 972-986, 2022.
@article{Vicovaro2022,
title = {Towards the boundaries of self-prioritization: Associating the self With asymmetric shapes disrupts the self-prioritization effect},
author = {Michele Vicovaro and Mario Dalmaso and Marco Bertamini},
url = {http://colab.psy.unipd.it/wp-content/uploads/2022/07/2022-79849-001.pdf},
doi = {10.1037/xhp0001036},
year = {2022},
date = {2022-05-25},
urldate = {2022-05-25},
journal = {Journal of Experimental Psychology: Human Perception and Performance},
volume = {49},
pages = {972-986},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Chen, Y; Brigadoi, S; Lomoriello, A Schiano; Jolicoeur, P; Simal, A; Fu, S; Baro, V; Dell’Acqua, R
A bilateral SPCN is elicited by to-be-memorized visual stimuli displayed along the vertical midline Journal Article
In: Psychophysiology, vol. 59, pp. e14045, 2022.
@article{dellacqua,
title = {A bilateral SPCN is elicited by to-be-memorized visual stimuli displayed along the vertical midline},
author = {Y Chen and S Brigadoi and A Schiano Lomoriello and P Jolicoeur and A Simal and S Fu and V Baro and R Dell’Acqua},
url = {http://colab.psy.unipd.it/wp-content/uploads/2022/03/pphys_spcnb_22-1.pdf},
doi = {10.1111/psyp.14045},
year = {2022},
date = {2022-03-02},
journal = {Psychophysiology},
volume = {59},
pages = {e14045},
abstract = {We recently showed that deploying attention to target stimuli displayed along the vertical meridian elicits a bilateral N2pc, that we labeled N2pcb (Psychophysiology). Here we investigated whether a different component, the sustained posterior contralateral negativity (SPCN), shows the same property when a varying num- ber of visual stimuli are displayed either laterally or on the vertical meridian. We displayed one or two cues that designated candidate targets to be detected in a search array that was displayed after a retention interval. The cues were either on the horizontal meridian or on the vertical meridian. When the cues were on the horizontal meridian, we observed an N2pc followed by an SPCN in their classic form, as negativity increments contralateral to the cues. As expected, SPCN am- plitude was greater when two cues had to be memorized than when only one cue had to be memorized. When the cues were on the vertical meridian, we observed an N2pcb followed by a bilateral SPCN (or SPCNb). Critically, like SPCN, SPCNb amplitude was greater when two cues had to be memorized than when only one cue had to be memorized. A series of additional parametrical and topographi- cal comparisons between N2pcb and SPCNb revealed similarities but also some important differences between these two components that we interpreted as evi- dence for their distinct neural sources.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
We recently showed that deploying attention to target stimuli displayed along the vertical meridian elicits a bilateral N2pc, that we labeled N2pcb (Psychophysiology). Here we investigated whether a different component, the sustained posterior contralateral negativity (SPCN), shows the same property when a varying num- ber of visual stimuli are displayed either laterally or on the vertical meridian. We displayed one or two cues that designated candidate targets to be detected in a search array that was displayed after a retention interval. The cues were either on the horizontal meridian or on the vertical meridian. When the cues were on the horizontal meridian, we observed an N2pc followed by an SPCN in their classic form, as negativity increments contralateral to the cues. As expected, SPCN am- plitude was greater when two cues had to be memorized than when only one cue had to be memorized. When the cues were on the vertical meridian, we observed an N2pcb followed by a bilateral SPCN (or SPCNb). Critically, like SPCN, SPCNb amplitude was greater when two cues had to be memorized than when only one cue had to be memorized. A series of additional parametrical and topographi- cal comparisons between N2pcb and SPCNb revealed similarities but also some important differences between these two components that we interpreted as evi- dence for their distinct neural sources.
Dalmaso, Mario; Petri, Lara; Patron, Elisabetta; Spoto, Andrea; Vicovaro, Michele
Direct gaze holds attention, but not in individuals with obsessive-compulsive disorder Journal Article
In: Brain Sciences, vol. 12, pp. 288, 2022.
@article{Dalmaso2022b,
title = {Direct gaze holds attention, but not in individuals with obsessive-compulsive disorder},
author = {Mario Dalmaso and Lara Petri and Elisabetta Patron and Andrea Spoto and Michele Vicovaro},
url = {http://colab.psy.unipd.it/wp-content/uploads/2022/02/brainsci-12-00288.pdf},
doi = {10.3390/brainsci12020288},
year = {2022},
date = {2022-02-18},
journal = {Brain Sciences},
volume = {12},
pages = {288},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Del Maschio, N; Crespi, F; Peressotti, F; Abutalebi, J; Sulpizio, S
Decision-making depends on language: A meta-analysis of the Foreign Language Effect Journal Article
In: Bilingualism: Language and Cognition, pp. 1-14, 2022.
@article{DelMaschio2022,
title = {Decision-making depends on language: A meta-analysis of the Foreign Language Effect},
author = {Del Maschio, N and Crespi, F and Peressotti, F and Abutalebi, J and Sulpizio, S },
url = {https://doi.org/10.1017/S1366728921001012},
year = {2022},
date = {2022-02-17},
journal = {Bilingualism: Language and Cognition},
pages = {1-14},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Mazzonetto, I; Castellaro, M; Cooper, R J; Brigadoi, S
Smartphone-based photogrammetry provides improved localization and registration of scalp-mounted neuroimaging sensors Journal Article
In: Scientific Reports, vol. 12, no. 1, pp. 1–14, 2022.
@article{mazzonetto2022smartphone,
title = {Smartphone-based photogrammetry provides improved localization and registration of scalp-mounted neuroimaging sensors},
author = { I Mazzonetto and M Castellaro and R J Cooper and S Brigadoi},
url = {http://colab.psy.unipd.it/wp-content/uploads/2022/09/Mazzonetto-Smartphone‑based-photogrammetry-provides-improved-localization-and-registration-of-scalp‑mounted-neuroimaging-sensors.pdf},
doi = {10.1038/s41598-022-14458-6},
year = {2022},
date = {2022-01-01},
urldate = {2022-01-01},
journal = {Scientific Reports},
volume = {12},
number = {1},
pages = {1--14},
publisher = {Nature Publishing Group},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Guerra, Silvia; Bonato, Bianca; Wang, Qiuran; Peressotti, Alessandro; Peressotti, Francesca; Baccinelli, Walter; Bulgheroni, Maria; Castiello, Umberto
Kinematic Evidence of Root-to-Shoot Signaling for the Coding of Support Thickness in Pea Plants Journal Article
In: Biology, vol. 11, no. 3, pp. 405, 2022.
@article{guerra2022kinematic,
title = {Kinematic Evidence of Root-to-Shoot Signaling for the Coding of Support Thickness in Pea Plants},
author = {Silvia Guerra and Bianca Bonato and Qiuran Wang and Alessandro Peressotti and Francesca Peressotti and Walter Baccinelli and Maria Bulgheroni and Umberto Castiello},
year = {2022},
date = {2022-01-01},
urldate = {2022-01-01},
journal = {Biology},
volume = {11},
number = {3},
pages = {405},
publisher = {MDPI},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Quartarone, Cinzia; Navarrete, Eduardo; Budisavljevi'c, Sanja; Peressotti, Francesca
Exploring the ventral white matter language network in bimodal and unimodal bilinguals Journal Article
In: Brain and Language, vol. 235, pp. 105187, 2022.
@article{quartarone2022exploring,
title = {Exploring the ventral white matter language network in bimodal and unimodal bilinguals},
author = {Cinzia Quartarone and Eduardo Navarrete and Sanja Budisavljevi'c and Francesca Peressotti},
year = {2022},
date = {2022-01-01},
urldate = {2022-01-01},
journal = {Brain and Language},
volume = {235},
pages = {105187},
publisher = {Elsevier},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Miozzo, Michele; Peressotti, Francesca
How the hand has shaped sign languages Journal Article
In: Scientific Reports, vol. 12, no. 1, pp. 11980, 2022.
@article{miozzo2022hand,
title = {How the hand has shaped sign languages},
author = {Michele Miozzo and Francesca Peressotti},
year = {2022},
date = {2022-01-01},
urldate = {2022-01-01},
journal = {Scientific Reports},
volume = {12},
number = {1},
pages = {11980},
publisher = {Nature Publishing Group UK London},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Lorenzoni, Anna; Santesteban, Mikel; Peressotti, Francesca; Baus, Cristina; Navarrete, Eduardo
Language as a cue for social categorization in bilingual communities Journal Article
In: Plos one, vol. 17, no. 11, pp. e0276334, 2022.
@article{lorenzoni2022language,
title = {Language as a cue for social categorization in bilingual communities},
author = { Anna Lorenzoni and Mikel Santesteban and Francesca Peressotti and Cristina Baus and Eduardo Navarrete},
url = {https://journals.plos.org/plosone/article?id=10.1371/journal.pone.0276334},
doi = {https://doi.org/10.1371/journal.pone.0276334},
year = {2022},
date = {2022-01-01},
urldate = {2022-01-01},
journal = {Plos one},
volume = {17},
number = {11},
pages = {e0276334},
publisher = {Public Library of Science San Francisco, CA USA},
abstract = {This registered report article investigates the role of language as a dimension of social categorization. Our critical aim was to investigate whether categorization based on language occurs even when the languages coexist within the same sociolinguistic context, as is the case in bilingual communities. Bilingual individuals of two bilingual communities, the Basque Country (Spain) and Veneto (Italy), were tested using the memory confusion paradigm in a ‘Who said what?’ task. In the encoding part of the task, participants were presented with different faces together with auditory sentences. Two different languages of the sentences were presented in each study, with half of the faces always associated with one language and the other half with the other language. Spanish and Basque languages were used in Study 1, and Italian and Venetian dialect in Study 2. In the test phase, the auditory sentences were presented again and participants were required to decide which face uttered each sentence. As expected, participants error rates were high. Critically, participants were more likely to confuse faces from the same language category than from the other (different) language category. The results indicate that bilinguals categorize individuals belonging to the same sociolinguistic community based on the language these individuals speak, suggesting that social categorization based on language is an automatic process.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
This registered report article investigates the role of language as a dimension of social categorization. Our critical aim was to investigate whether categorization based on language occurs even when the languages coexist within the same sociolinguistic context, as is the case in bilingual communities. Bilingual individuals of two bilingual communities, the Basque Country (Spain) and Veneto (Italy), were tested using the memory confusion paradigm in a ‘Who said what?’ task. In the encoding part of the task, participants were presented with different faces together with auditory sentences. Two different languages of the sentences were presented in each study, with half of the faces always associated with one language and the other half with the other language. Spanish and Basque languages were used in Study 1, and Italian and Venetian dialect in Study 2. In the test phase, the auditory sentences were presented again and participants were required to decide which face uttered each sentence. As expected, participants error rates were high. Critically, participants were more likely to confuse faces from the same language category than from the other (different) language category. The results indicate that bilinguals categorize individuals belonging to the same sociolinguistic community based on the language these individuals speak, suggesting that social categorization based on language is an automatic process.
Lorenzoni, Anna; Pagliarini, Elena; Vespignani, Francesco; Navarrete, Eduardo
Pragmatic and knowledge range lenience towards foreigners Journal Article
In: Acta Psychologica, vol. 226, pp. 103572, 2022.
@article{lorenzoni2022pragmatic,
title = {Pragmatic and knowledge range lenience towards foreigners},
author = { Anna Lorenzoni and Elena Pagliarini and Francesco Vespignani and Eduardo Navarrete},
url = {https://www.sciencedirect.com/science/article/pii/S0001691822000877},
doi = {https://doi.org/10.1016/j.actpsy.2022.103572},
year = {2022},
date = {2022-01-01},
urldate = {2022-01-01},
journal = {Acta Psychologica},
volume = {226},
pages = {103572},
publisher = {Elsevier},
abstract = {Foreign-accented speech categorizes the speaker as an outgroup individual with a lower linguistic competence and a different knowledge heritage from a native speaker. Here we explore whether the identification of an individual as a native or a foreign speaker has an impact on trivia statement judgments, regardless of her foreign-accented speech. Italian native participants first read a bio description of a native and of a foreign speaker and then rate to what degree a series of statements associated with each of the speakers makes sense (Studies 1 and 2) or are true (Study 3). Importantly, the fluency processing between native and foreign speakers was kept constant by using a written presentation of the materials. Under-informative statements such as ‘Some frogs are amphibians’ were tested in Study 1. The results of Study 1 show more acceptable judgments when the sentences were associated with the foreign speaker. Unknown facts about world knowledge such as ‘Butterflies do not see gray’ were tested in Studies 2 and 3. The results show more acceptable (Study 2) and more true (Study 3) judgments when the sentences were associated with the foreign speaker. In addition, in Study 3 the foreign speaker was considered more trustworthy than the native speaker in a rating test at the end of the main judgment-sentence task. Our findings show that linguistic identity per se has an impact on evaluation judgments, suggesting that message interpretation cannot be dissociated from who is communicating the message.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Foreign-accented speech categorizes the speaker as an outgroup individual with a lower linguistic competence and a different knowledge heritage from a native speaker. Here we explore whether the identification of an individual as a native or a foreign speaker has an impact on trivia statement judgments, regardless of her foreign-accented speech. Italian native participants first read a bio description of a native and of a foreign speaker and then rate to what degree a series of statements associated with each of the speakers makes sense (Studies 1 and 2) or are true (Study 3). Importantly, the fluency processing between native and foreign speakers was kept constant by using a written presentation of the materials. Under-informative statements such as ‘Some frogs are amphibians’ were tested in Study 1. The results of Study 1 show more acceptable judgments when the sentences were associated with the foreign speaker. Unknown facts about world knowledge such as ‘Butterflies do not see gray’ were tested in Studies 2 and 3. The results show more acceptable (Study 2) and more true (Study 3) judgments when the sentences were associated with the foreign speaker. In addition, in Study 3 the foreign speaker was considered more trustworthy than the native speaker in a rating test at the end of the main judgment-sentence task. Our findings show that linguistic identity per se has an impact on evaluation judgments, suggesting that message interpretation cannot be dissociated from who is communicating the message.
SANCHEZ, Eduardo NAVARRETE; Pedis, Marta De; Lorenzoni, Anna; others,
Verbal deception in picture naming Journal Article
In: QUARTERLY JOURNAL OF EXPERIMENTAL PSYCHOLOGY, 2022.
@article{navarrete2022verbal,
title = {Verbal deception in picture naming},
author = { Eduardo NAVARRETE SANCHEZ and Marta De Pedis and Anna Lorenzoni and others},
url = {https://journals.sagepub.com/doi/full/10.1177/17470218221146540},
doi = {https://doi.org/10.1177/17470218221146540},
year = {2022},
date = {2022-01-01},
urldate = {2022-01-01},
journal = {QUARTERLY JOURNAL OF EXPERIMENTAL PSYCHOLOGY},
abstract = {Telling a lie requires several cognitive processes. We investigated three cognitive processes involved in verbal deception: the decision to deceive, the suppression of the true statement, and the construction of the false statement. In a standard picture-naming task, participants were instructed to commit true and false naming statements. Critically, participants could freely decide to name the picture (i.e., true naming events) or to commit a verbal deception and use a different name (i.e., false naming events). Different types of analysis were performed with the aim of exploring the influence of semantic, lexical, and phonological information of the target picture in the decision, suppression, and construction processes. The first type of analysis revealed that participants decided to lie more often when the target picture was less typical or less familiar. The second and third types of analysis focused on the false naming events. False naming latencies turned out to be faster when the name of the target picture was a highly frequent or an earlier-acquired name, suggesting an influence of lexical variables in the suppression of the true statement. The third analysis type explored the phonological relationship between the word that participants uttered in the false statements and the target picture name. No phonological influences emerged in this last analysis. These findings demonstrate that verbal deception is tied to semantic and lexical variables corresponding to true statements.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Telling a lie requires several cognitive processes. We investigated three cognitive processes involved in verbal deception: the decision to deceive, the suppression of the true statement, and the construction of the false statement. In a standard picture-naming task, participants were instructed to commit true and false naming statements. Critically, participants could freely decide to name the picture (i.e., true naming events) or to commit a verbal deception and use a different name (i.e., false naming events). Different types of analysis were performed with the aim of exploring the influence of semantic, lexical, and phonological information of the target picture in the decision, suppression, and construction processes. The first type of analysis revealed that participants decided to lie more often when the target picture was less typical or less familiar. The second and third types of analysis focused on the false naming events. False naming latencies turned out to be faster when the name of the target picture was a highly frequent or an earlier-acquired name, suggesting an influence of lexical variables in the suppression of the true statement. The third analysis type explored the phonological relationship between the word that participants uttered in the false statements and the target picture name. No phonological influences emerged in this last analysis. These findings demonstrate that verbal deception is tied to semantic and lexical variables corresponding to true statements.
Dona, Giuseppe Di; Mantione, Federica; Alber, Birgit; Sulpizio, Simone; Vespignani, Francesco
Allophonic familiarity differentiates word representations in the brain of native speakers of regional linguistic varieties Journal Article
In: Brain and Language, vol. 227, pp. 105085, 2022.
@article{di2022allophonic,
title = {Allophonic familiarity differentiates word representations in the brain of native speakers of regional linguistic varieties},
author = {Giuseppe Di Dona and Federica Mantione and Birgit Alber and Simone Sulpizio and Francesco Vespignani},
year = {2022},
date = {2022-01-01},
journal = {Brain and Language},
volume = {227},
pages = {105085},
publisher = {Academic Press},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
2021
Gastaldon, Simone; Busan, Pierpaolo; Arcara, Giorgio; Peressotti, Francesca
In: bioRxiv, pp. 2021.10.28.466231, 2021.
@article{Gastaldon2021,
title = {When inefficient speech-motor control affects speech comprehension: atypical electrophysiological correlates of language prediction in stuttering},
author = {Simone Gastaldon and Pierpaolo Busan and Giorgio Arcara and Francesca Peressotti},
url = {https://www.biorxiv.org/content/10.1101/2021.10.28.466231v1.full.pdf},
doi = {10.1101/2021.10.28.466231},
year = {2021},
date = {2021-10-28},
urldate = {2021-10-28},
journal = {bioRxiv},
pages = {2021.10.28.466231},
abstract = {It is well attested that people predict forthcoming information during language comprehension. The literature presents different proposals on how this ability could be implemented. Here, we tested the hypothesis according to which language production mechanisms have a role in such predictive processing. To this aim, we studied two electroencephalographic correlates of predictability during speech comprehension ‒ pre-target alpha‒beta (8-30 Hz) power decrease and the post-target N400 event-related potential (ERP) effect, ‒ in a population with impaired speech-motor control, i.e., adults who stutter (AWS), compared to typically fluent adults (TFA). Participants listened to sentences that could either constrain towards a target word or not, allowing or not to make predictions. We analyzed time-frequency modulations in a silent interval preceding the target and ERPs at the presentation of the target. Results showed that, compared to TFA, AWS display: i) a widespread and bilateral reduced power decrease in posterior temporal and parietal regions, and a power increase in anterior regions, especially in the left hemisphere (high vs. low constraining) and ii) a reduced N400 effect (non-predictable vs. predictable). The results suggest a reduced efficiency in generating predictions in AWS with respect to TFA. Additionally, the magnitude of the N400 effect in AWS is correlated with alpha power change in the right pre-motor and supplementary motor cortex, a key node in the dysfunctional network in stuttering. Overall, the results support the idea that processes and neural structures prominently devoted to speech planning and execution support prediction during language comprehension.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
It is well attested that people predict forthcoming information during language comprehension. The literature presents different proposals on how this ability could be implemented. Here, we tested the hypothesis according to which language production mechanisms have a role in such predictive processing. To this aim, we studied two electroencephalographic correlates of predictability during speech comprehension ‒ pre-target alpha‒beta (8-30 Hz) power decrease and the post-target N400 event-related potential (ERP) effect, ‒ in a population with impaired speech-motor control, i.e., adults who stutter (AWS), compared to typically fluent adults (TFA). Participants listened to sentences that could either constrain towards a target word or not, allowing or not to make predictions. We analyzed time-frequency modulations in a silent interval preceding the target and ERPs at the presentation of the target. Results showed that, compared to TFA, AWS display: i) a widespread and bilateral reduced power decrease in posterior temporal and parietal regions, and a power increase in anterior regions, especially in the left hemisphere (high vs. low constraining) and ii) a reduced N400 effect (non-predictable vs. predictable). The results suggest a reduced efficiency in generating predictions in AWS with respect to TFA. Additionally, the magnitude of the N400 effect in AWS is correlated with alpha power change in the right pre-motor and supplementary motor cortex, a key node in the dysfunctional network in stuttering. Overall, the results support the idea that processes and neural structures prominently devoted to speech planning and execution support prediction during language comprehension.
Dalmaso, Mario; Zhang, Xinyuan; Galfano, Giovanni; Castelli, Luigi
Face masks do not alter gaze cueing of attention: Evidence from the COVID-19 pandemic Journal Article
In: i-Perception, vol. 12, pp. 1-16, 2021.
@article{Dalmaso2021e,
title = {Face masks do not alter gaze cueing of attention: Evidence from the COVID-19 pandemic},
author = {Mario Dalmaso and Xinyuan Zhang and Giovanni Galfano and Luigi Castelli },
url = {http://colab.psy.unipd.it/wp-content/uploads/2021/12/20416695211058480.pdf},
doi = {10.1177/20416695211058480},
year = {2021},
date = {2021-10-25},
journal = {i-Perception},
volume = {12},
pages = {1-16},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Dalmaso, Mario; Castelli, Luigi; Galfano, Giovanni
Increased gaze cueing of attention during COVID-19 lockdown Journal Article
In: iScience, vol. 24, 103283, 2021.
@article{Dalmaso2021d,
title = {Increased gaze cueing of attention during COVID-19 lockdown},
author = {Mario Dalmaso and Luigi Castelli and Giovanni Galfano},
url = {http://colab.psy.unipd.it/wp-content/uploads/2021/10/PIIS2589004221012529-1.pdf},
doi = {10.1016/j.isci.2021.103283},
year = {2021},
date = {2021-10-20},
journal = {iScience},
volume = {24, 103283},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
Marturano, F; Brigadoi, S; Doro, M; Dell'Acqua, R; Sparacino, G
A neural network predicting the amplitude of the N2pc in individual EEG datasets Journal Article
In: Journal of Neural Engineering, vol. 18, pp. 056044, 2021.
@article{Marturano2021,
title = {A neural network predicting the amplitude of the N2pc in individual EEG datasets},
author = {F Marturano and S Brigadoi and M Doro and R Dell'Acqua and G Sparacino},
url = {http://colab.psy.unipd.it/wp-content/uploads/2021/12/jne_nnet_21.pdf},
doi = {10.1088/1741-2552/ac2849},
year = {2021},
date = {2021-10-05},
journal = {Journal of Neural Engineering},
volume = {18},
pages = {056044},
abstract = {The N2pc is a small amplitude transient interhemispheric voltage asymmetry used in cognitive neuroscience to investigate subject’s allocation of selective visuo-spatial attention. N2pc is typically estimated by averaging the sweeps of the electroencephalographic (EEG) signal but, in absence of explicit normative indications, the number ofsweeps is often based on arbitrariness or personal experience. With the final aim of reducing duration and cost of experimental protocols, here we developed a new approach to reliably predict N2pc amplitude from a minimal EEG dataset. Approach. First, features predictive ofN2pc amplitude were identified in the time-frequency domain. Then, an artificial neural network (NN) was trained to predict N2pc mean amplitude at the individual level. By resorting to simulated data, accuracy of the NN was assessed by computing the mean squared error (MSE) and the amplitude discretization error (ADE) and compared to the standard time averaging (TA) technique. The NN was then tested against two real datasets consisting of 14 and 12 subjects, respectively. Main result. In simulated scenarios entailing different number ofsweeps (between 10 and 100), the MSE obtained with the proposed method resulted, on average, 1/5 of that obtained with the TA technique. Implementation on real EEG datasets showed that N2pc amplitude could be reliably predicted with as few as 40 EEG sweeps per cell of the experimental design. Significance. The developed approach allows to reduce duration and cost of experiments involving the N2pc, for instance in studies investigating attention deficits in pathological subjects.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
The N2pc is a small amplitude transient interhemispheric voltage asymmetry used in cognitive neuroscience to investigate subject’s allocation of selective visuo-spatial attention. N2pc is typically estimated by averaging the sweeps of the electroencephalographic (EEG) signal but, in absence of explicit normative indications, the number ofsweeps is often based on arbitrariness or personal experience. With the final aim of reducing duration and cost of experimental protocols, here we developed a new approach to reliably predict N2pc amplitude from a minimal EEG dataset. Approach. First, features predictive ofN2pc amplitude were identified in the time-frequency domain. Then, an artificial neural network (NN) was trained to predict N2pc mean amplitude at the individual level. By resorting to simulated data, accuracy of the NN was assessed by computing the mean squared error (MSE) and the amplitude discretization error (ADE) and compared to the standard time averaging (TA) technique. The NN was then tested against two real datasets consisting of 14 and 12 subjects, respectively. Main result. In simulated scenarios entailing different number ofsweeps (between 10 and 100), the MSE obtained with the proposed method resulted, on average, 1/5 of that obtained with the TA technique. Implementation on real EEG datasets showed that N2pc amplitude could be reliably predicted with as few as 40 EEG sweeps per cell of the experimental design. Significance. The developed approach allows to reduce duration and cost of experiments involving the N2pc, for instance in studies investigating attention deficits in pathological subjects.
Zhang, Xinyuan; Dalmaso, Mario; Castelli, Luigi; Fu, Shimin; Galfano, Giovanni
Cross-cultural asymmetries in oculomotor interference elicited by gaze distractors belonging to Asian and White faces Journal Article
In: Scientific Reports, vol. 11, 20410, 2021.
@article{Zhang2021,
title = {Cross-cultural asymmetries in oculomotor interference elicited by gaze distractors belonging to Asian and White faces},
author = {Xinyuan Zhang and Mario Dalmaso and Luigi Castelli and Shimin Fu and Giovanni Galfano},
url = {http://colab.psy.unipd.it/wp-content/uploads/2021/10/s41598-021-99954-x.pdf},
doi = {10.1038/s41598-021-99954-x},
year = {2021},
date = {2021-10-05},
journal = {Scientific Reports},
volume = {11, 20410},
keywords = {},
pubstate = {published},
tppubtype = {article}
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Zhang, Xinyuan; Dalmaso, Mario; Castelli, Luigi; Fiorese, Alberto; Lan, Yonglong; Sun, Bo; Fu, Shimin; Galfano, Giovanni
Social attention across borders: A cross-cultural investigation of gaze cueing elicited by same- and other-ethnicity faces Journal Article
In: British Journal of Psychology, vol. 112, pp. 741–762, 2021.
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Dalmaso, Mario; Vicovaro, Michele
Is face age mapped asymmetrically onto space? Insights from a SNARC-like task Journal Article
In: Symmetry, vol. 13, 1617, 2021.
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Siddiqui, M F; Pinti, P; Lloyd-Fox, S; Jones, E JH; Brigadoi, S; Collins-Jones, L; Tachtsidis, I; Johnson, M H; Elwell, C E
Regional Haemodynamic and Metabolic Coupling in Infants Journal Article
In: Frontiers in human neuroscience, vol. 15, 2021.
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title = {Regional Haemodynamic and Metabolic Coupling in Infants},
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