Topic: area V2

Decades of work has attempted to explain how the representation of visual information is transformed across stages of the cortical processing stream. In some cases, these transformations have been elucidated by insights into how the receptive field properties of individual neurons differ across areas. But the view provided by single neuron selectivity has struggled to explain the transformations occurring from early to mid-level cortex. An alternative, complementary approach is to study the representational geometry of neuronal populations. Though derived from individual neuronal selectivity,

Ventral pathway circuits are constituted by the interconnected brain areas that are distributed throughout the brain. They are primarily involved in processing of object related information in brain. However, their role in object recognition memory (ORM) enhancement remains unknown. In this study, we show that an activation of each of the brain areas interconnected to ventral pathway circuits individually induced enhancement in ORM; however, same treatment in brain areas not interconnected to ventral pathway circuits produced no effect. Further study in perirhinal cortex (PRh), area V2 of visu

In primates, the amygdala forms projections that target large expanses of the ipsilateral cerebral cortex, from the frontal to the occipital lobe. However, it has remained unknown to what extent the amygdala complex also forms monosynaptic connections with the contralateral visual cortex, other than inferior temporal areas. Here we report on the results of 8 retrograde tracer injections (Fast Blue, and CTB conjugated with Alexa fluorophores) placed in the caudal extrastriate visual cortex of 6 marmoset monkeys (Callithrix jacchus), under Alfaxan anaesthesia, followed by 2 weeks transport time.