کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10464746 | 925699 | 2013 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
The 6Â Hz fundamental stimulation frequency rate for individual face discrimination in the right occipito-temporal cortex
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موضوعات مرتبط
علوم زیستی و بیوفناوری
علم عصب شناسی
علوم اعصاب رفتاری
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![عکس صفحه اول مقاله: The 6Â Hz fundamental stimulation frequency rate for individual face discrimination in the right occipito-temporal cortex The 6Â Hz fundamental stimulation frequency rate for individual face discrimination in the right occipito-temporal cortex](/preview/png/10464746.png)
چکیده انگلیسی
What is the stimulus presentation rate at which the human brain can discriminate each exemplar of a familiar visual category? We presented faces at 14 frequency rates (1.0-16.66Â Hz) to human observers while recording high-density electroencephalogram (EEG). Different face exemplars elicited a larger steady-state visual evoked (ssVEP) response than when the same face was repeated, but only for stimulation frequencies between 4 and 8.33Â Hz, with a maximal difference at 5.88Â Hz (170Â ms cycle). The effect was confined to the exact stimulation frequency and localized over the right occipito-temporal cortex. At high frequency rates (>10Â Hz), the response to different and identical exemplars did not differ, suggesting that the fine-grained analysis needed for individual face discrimination cannot be completed before the next face interrupts, or competes, with the processed face. At low rates (<3Â Hz), repetition suppression could not be identified at the stimulation frequency, suggesting that the neural response to an individual face is temporally dispersed and distributed over different processes. These observations indicate that at a temporal rate of 170Â ms (6 faces/s) the face perception network is able to fully discriminate between each individual face presented, providing information about the temporal bottleneck of individual face discrimination in humans. These results also have important practical implications for optimizing paradigms that rely on repetition suppression, and open an avenue for investigating complex visual processes at an optimal range of stimulation frequency rates.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Neuropsychologia - Volume 51, Issue 13, November 2013, Pages 2863-2875
Journal: Neuropsychologia - Volume 51, Issue 13, November 2013, Pages 2863-2875
نویسندگان
Esther Alonso-Prieto, Goedele Van Belle, Joan Liu-Shuang, Anthony M. Norcia, Bruno Rossion,