The effects of fixational eye movements on population responses in V1
| العنوان: | The effects of fixational eye movements on population responses in V1 |
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| المؤلفون: | Hamutal Slovin |
| المصدر: | Journal of Eye Movement Research Journal of Eye Movement Research; Bd. 12 Nr. 7 (2019): 20th European Conference on Eye Movements Journal of Eye Movement Research; Vol. 12 No. 7 (2019): 20th European Conference on Eye Movements |
| بيانات النشر: | University of Bern, 2019. |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | V1, Neural correlates of consciousness, education.field_of_study, Visual perception, genetic structures, Population, Eye movement, fixational eye movements, Biology, eye diseases, digestive system diseases, Sensory Systems, microsaccades, population response, Ophthalmology, Visual cortex, medicine.anatomical_structure, Fixation (visual), medicine, Premovement neuronal activity, Microsaccade, education, Neuroscience, Research Article |
| الوصف: | Video stream: https://vimeo.com/362367119 During visual fixation, the eyes make small and fast movements known as microsaccades (MSs). The effects of MSs on neural activity in the visual cortex are not well understood. Utilizing voltage-sensitive dye imaging, we imaged the spatiotemporal patterns of neuronal responses induced by MSs in early visual cortices of behaving monkeys. Our results reveal a continuous “visual instability” during fixation: while the visual stimulus moves over the retina with each MS, the neuronal activity in V1 ‘hops’ within the retinotopic map, as dictated by the MS parameters. Neuronal modulations induced by MSs are characterized by neural suppression followed by neural enhancement and increased synchronization. The suppressed activity may underlie the suppressed perception during MSs whereas the late enhancement may facilitate the processing of new incoming image information. Moreover, the instability induced by MSs applies also to neural correlates of visual perception processes such as figure-ground (FG) segregation, which appear to develop faster after fixational saccades. |
| تدمد: | 1995-8692 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::83b2e36052b3af4c0a5facca378d1384 https://doi.org/10.16910/jemr.12.7.7 |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....83b2e36052b3af4c0a5facca378d1384 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 19958692 |
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