Neural field model to reconcile structure with function in primary visual cortex. James Rankin - 13/05/2019
13/05/2019 ore 14.30
James Rankin (University of Exeter)
"Neural field model to reconcile structure with function in primary visual cortex"
Voltage-sensitive dye imaging experiments in primary visual cortex (V1) have shown that local, oriented visual stimuli elicit stable orientation-selective activation within the stimulus retinotopic footprint (Chavane et al 2011). The cortical activation dynamically extends far beyond the retinotopic footprint, but the peripheral spread stays non-selective - a surprising finding given a number of anatomo-functional studies showing the orientation specificity of long-range connections. Here it is used a computational model to investigate this apparent discrepancy by studying the expected population response using known published anatomical constraints. It is founded substantial overlap between the anatomically relevant parameter range and a steep decay in orientation selective activation that is consistent with the imaging experiments.
Aula Luciani (Sapienza University Campus – Building CU027)
for info: email@example.com; 06 49910306
firstname.lastname@example.org; 06 49902513
Lunedì, 13 Maggio, 2019