1. Feedback contribution to surface motion perception in the human early visual cortex
- Author
-
Omer Faruk Gulban, Kâmil Uludağ, Ingo Marquardt, Peter De Weerd, Yawen Wang, Marian Schneider, Dimo Ivanov, MRI, RS: FPN CN 5, Perception, RS: FPN MaCSBio, RS: FPN CN 3, Vision, and RS: FPN CN 1
- Subjects
MACAQUE MONKEY ,0301 basic medicine ,genetic structures ,Motion Perception ,feedback ,STRIATE CORTEX ,3-DIMENSIONAL FORM ,Motion (physics) ,0302 clinical medicine ,Illusory motion ,FILLING-IN ,Segmentation ,Biology (General) ,visual cortex ,media_common ,Feedback, Physiological ,INFERIOR PULVINAR ,General Neuroscience ,General Medicine ,Magnetic Resonance Imaging ,AREA 17 ,FIGURE-GROUND SEGREGATION ,medicine.anatomical_structure ,CONTRAST RESPONSE ,Medicine ,Female ,Psychology ,psychological phenomena and processes ,Research Article ,Human ,Adult ,Adolescent ,QH301-705.5 ,Science ,media_common.quotation_subject ,behavioral disciplines and activities ,General Biochemistry, Genetics and Molecular Biology ,Young Adult ,BRIGHTNESS PERCEPTION ,03 medical and health sciences ,Perception ,surface motion perception ,medicine ,Humans ,Motion perception ,Neural correlates of consciousness ,laminar fMRI ,General Immunology and Microbiology ,Feed forward ,cortical layers ,030104 developmental biology ,Visual cortex ,top-down ,LATERAL GENICULATE-NUCLEUS ,Neuroscience ,Photic Stimulation ,030217 neurology & neurosurgery - Abstract
Human visual surface perception has neural correlates in early visual cortex, but the role of feedback during surface segmentation in human early visual cortex remains unknown. Feedback projections preferentially enter superficial and deep anatomical layers, which provides a hypothesis for the cortical depth distribution of fMRI activity related to feedback. Using ultra-high field fMRI, we report a depth distribution of activation in line with feedback during the (illusory) perception of surface motion. Our results fit with a signal re-entering in superficial depths of V1, followed by a feedforward sweep of the re-entered information through V2 and V3. The magnitude and sign of the BOLD response strongly depended on the presence of texture in the background, and was additionally modulated by the presence of illusory motion perception compatible with feedback. In summary, the present study demonstrates the potential of depth-resolved fMRI in tackling biomechanical questions on perception.
- Published
- 2020
- Full Text
- View/download PDF