Modulation ratio of layer 2/3 cells in primary visual cortex: A model based study

Autor:	Basabi Bhaumik, K.J. Dhanaraj
Rok vydání:	2015
Předmět:	education.field_of_study Retina business.industry Computer science Population medicine.anatomical_structure Visual cortex Modulation Receptive field medicine Biophysics Computer vision Artificial intelligence education business Binocular neurons
Zdroj:	IJCNN
Popis:	Through a reaction-diffusion based model we have studied modulation ratio (MR) in layer 2=3 cells in cat primary visual cortex. The reaction-diffusion based developmental model is based on resource limited competition and diffusive cooperation among neighboring cells. We have obtained receptive fields (RFs) and responses of binocular cells in layer 2=3. The ON- OFF subregion overlap in RF is quantified. We observe a significant correlation between RF ON-OFF subregion overlap and MR. For almost all the cells in layer 2=3 MR 1 and behave as simple cells. Based on modulation index from spiking response our modelled layer 2=3 cell population has 76% complex cells and 24% simple cells. We find that local lateral connections have less influence on MR but improve the tuning characteristics of cells significantly.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::34f281ae3dc74e6eb39030ff38563ada https://doi.org/10.1109/ijcnn.2015.7280386 Zobrazit plný text záznamu