Publications de Vitaly Chicherov

Unraveling brain interactions in vision: the example of crowding

Michael Herzog, Vitaly Chicherov, Maya Anna Jastrzebowska, Bogdan Draganski

Crowding, the impairment of target discrimination in clutter, is the standard situation in vision. Traditionally, crowding is explained with (feedforward) models, in which only neighboring elements interact, leading to a “bottleneck” at the earliest stages ...

2021

An automatic pre-processing pipeline for EEG analysis (APP) based on robust statistics

Michael Herzog, Vitaly Chicherov, Patricia Figueiredo, Janir Nuno Ramos Antunes Da Cruz

2018

Dominant men are faster in decision-making situations and exhibit a distinct neural signal for promptness

Maria del Carmen Sandi Perez, Michael Herzog, Vitaly Chicherov, Patricia Figueiredo, John Christian Thoresen, Janir Nuno Ramos Antunes Da Cruz, João Pedro de Matos Rodrigues

2018

Social dominance orientation influences the perception of facial expressions

Maria del Carmen Sandi Perez, Michael Herzog, Vitaly Chicherov, Patricia Figueiredo

Association for Research in Vision and Ophthalmology2017

Un-crowding affects cortical activation in V1 differently from LOC

Michael Herzog, Vitaly Chicherov, Maya Anna Jastrzebowska, Bogdan Draganski

Association for Research in Vision and Ophthalmology2017

A novel automatic pre-processing pipeline for EEG analysis based on robust statistics

Michael Herzog, Vitaly Chicherov, Patricia Figueiredo, Janir Nuno Ramos Antunes Da Cruz

The electroencephalogram (EEG) is a non-invasive and low-cost tool for the investigation of human brain function. However, EEG data are typically contaminated with a number of artifacts. With the advent of both high-density EEG arrays and studies of large ...

2016

What crowds in crowding?

Michael Herzog, Bilge Sayim, Mauro Manassi, Vitaly Chicherov

Association for Research in Vision and Ophthalmology (ARVO)2016

Vision in clutter : neural correlates of visual crowding

Vitaly Chicherov

Perception of a visual target can strongly deteriorate in the presence of flanking elements (crowding). Crowding is the main limiting factor in reading and a major contributor to poor vision in amblyopia. In crowding, elements appear jumbled and thus are h ...

EPFL2015

Targets but not flankers are suppressed in crowding as revealed by EEG frequency tagging

Michael Herzog, Vitaly Chicherov

Perception of a visual target can strongly deteriorate in the presence of flanking elements (crowding). For example, adding lines next to a vernier makes vernier offset discrimination difficult. Crowding is often considered a bottleneck of low-level vision ...

Elsevier2015

Crowding, grouping, and object recognition: A matter of appearance

Michael Herzog, Bilge Sayim, Mauro Manassi, Vitaly Chicherov

In crowding, the perception of a target strongly deteriorates when neighboring elements are presented. Crowding is usually assumed to have the following characteristics. (a) Crowding is determined only by nearby elements within a restricted region around t ...

Association for Research in Vision and Ophthalmology2015

EEG frequency tagging dissociates target and flanker processing in crowding

Michael Herzog, Vitaly Chicherov

Flankers can strongly deteriorate performance on a target (crowding). The neural mechanisms of crowding are largely unknown. We have recently shown that the N1 component of the EEG is suppressed during crowding. Because it is difficult to disentangle the n ...

ASSOCIATION FOR RESEARCH IN VISION & OPHTHALMOLOGY2014

Crowding, grouping, timing

Michael Herzog, Mauro Manassi, Vitaly Chicherov, Aaron Michael Clarke

In crowding, target perception is deteriorated by flanking elements. For example, when a vernier is flanked by two lines of the same length, vernier offset discrimination strongly deteriorates. Interestingly, changing the color of the flankers can reduce c ...

2014

Neural correlates of visual crowding

Michael Herzog, Gijs Plomp, Vitaly Chicherov

In visual crowding, target discrimination strongly deteriorates when flanking elements are added. We have recently shown that crowding cannot be explained by simple low-level interactions and that grouping is a key component instead. We presented a vernier ...

Elsevier2014

Electrophysiological correlates of suppression and facilitation in crowding

Michael Herzog, Vitaly Chicherov

In crowding, neighboring elements deteriorate performance on a target. The neural mechanisms of crowding are largely unknown. We have recently shown that the N1 component of the EEG is suppressed during crowding. It is difficult to disentangle the processi ...

Pion Ltd2013

Electrophysiological signatures of crowding are similar in foveal and peripheral vision

Michael Herzog, Vitaly Chicherov

Flankers can strongly deteriorate performance on a visual target (crowding). For example, vernier offset discrimination strongly deteriorates when neighbouring flankers are presented. Interestingly, performance for longer and shorter flankers is better tha ...

Association for Research in Vision and Ophthalmology2013

Crowding suppresses the N1 wave

Michael Herzog, Gijs Plomp, Vitaly Chicherov

Flankers can strongly deteriorate performance on a visual target (crowding). For example, vernier offset discrimination is strongly affected by neighboring flankers. Interestingly, performance for longer and shorter flankers is better than performance for ...

Pion Ltd2012

The N1 wave amplitude reflects perceptual grouping and correlates with crowding

Michael Herzog, Gijs Plomp, Vitaly Chicherov

In crowding, flanking elements strongly deteriorate performance. For example, vernier offset discrimination is strongly affected by neighboring flankers. Performance is worst when the flankers have the same length as the vernier. Surprisingly, performance ...

Association for Research in Vision and Ophthalmology2012

The time course of perceptual grouping: a high density ERP study

Michael Herzog, Gijs Plomp, Vitaly Chicherov

Performance on a target can be strongly modified by context. For example, vernier offset discrimination is strongly deteriorated by neighboring flankers. Performance is worst when the flankers have the same length as the vernier. Surprisingly, performance ...

Pion Ltd2011