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Dissociable effects of inter-stimulus interval and presentation duration on rapid face categorization.
RETTER, Talia; Jiang, Fang; Webster, Michael A et al.
2018In Vision Research, 145, p. 11 - 20
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Abstract :
[en] Fast periodic visual stimulation combined with electroencephalography (FPVS-EEG) has unique sensitivity and objectivity in measuring rapid visual categorization processes. It constrains image processing time by presenting stimuli rapidly through brief stimulus presentation durations and short inter-stimulus intervals. However, the selective impact of these temporal parameters on visual categorization is largely unknown. Here, we presented natural images of objects at a rate of 10 or 20 per second (10 or 20 Hz), with faces appearing once per second (1 Hz), leading to two distinct frequency-tagged EEG responses. Twelve observers were tested with three squarewave image presentation conditions: 1) with an ISI, a traditional 50% duty cycle at 10 Hz (50-ms stimulus duration separated by a 50-ms ISI); 2) removing the ISI and matching the rate, a 100% duty cycle at 10 Hz (100-ms duration with 0-ms ISI); 3) removing the ISI and matching the stimulus presentation duration, a 100% duty cycle at 20 Hz (50-ms duration with 0-ms ISI). The face categorization response was significantly decreased in the 20 Hz 100% condition. The conditions at 10 Hz showed similar face-categorization responses, peaking maximally over the right occipito-temporal (ROT) cortex. However, the onset of the 10 Hz 100% response was delayed by about 20 ms over the ROT region relative to the 10 Hz 50% condition, likely due to immediate forward-masking by preceding images. Taken together, these results help to interpret how the FPVS-EEG paradigm sets temporal constraints on visual image categorization.
Disciplines :
Neurosciences & behavior
Author, co-author :
RETTER, Talia  ;  Psychological Sciences Research Institute, Institute of Neuroscience, University of Louvain, Belgium, Department of Psychology and Graduate Program in Integrative Neuroscience, University of Nevada, Reno, USA. Electronic address: tlretter@nevada.unr.edu
Jiang, Fang;  Department of Psychology and Graduate Program in Integrative Neuroscience, University of Nevada, Reno, USA
Webster, Michael A;  Department of Psychology and Graduate Program in Integrative Neuroscience, University of Nevada, Reno, USA
Rossion, Bruno;  Psychological Sciences Research Institute, Institute of Neuroscience, University of Louvain, Belgium, Neurology Unit, Centre Hospitalier Regional Universitaire (CHRU) de Nancy, F-54000 Nancy, France
External co-authors :
yes
Language :
English
Title :
Dissociable effects of inter-stimulus interval and presentation duration on rapid face categorization.
Publication date :
April 2018
Journal title :
Vision Research
ISSN :
0042-6989
eISSN :
1878-5646
Publisher :
Elsevier Ltd, England
Volume :
145
Pages :
11 - 20
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
FNRS
ERC
COBRE
Funding text :
This work was enabled by grants from the Belgian National Foundation for Scientific Research [ FNRS ; grant number FC7159 to TR] and the European Research Council [ ERC : facessvep 284025 to BR], as well as the Integrative Neuroscience Center of Biomedical Research Excellence [ COBRE : grant number P20 GM103650 ]. We would like to thank Andrea Conte for creating the stimulation program XPMan, revision 94. Finally, we are grateful for the feedback and discussion generated from visitors to a poster presentation of an earlier version of this work (at the European Conference on Visual Perception, Berlin, Germany, 2017).
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