Unimodal primary sensory cortices are directly connected by long-range horizontal projections in the rat sensory cortex.

ABSTRACT: Research based on functional imaging and neuronal recordings in the barrel cortex subdivision of primary somatosensory cortex (SI) of the adult rat has revealed novel aspects of structure-function relationships in this cortex. Specifically, it has demonstrated that single whisker stimulation evokes subthreshold neuronal activity that spreads symmetrically within gray matter from the appropriate barrel area, crosses cytoarchitectural borders of SI and reaches deeply into other unimodal primary cortices such as primary auditory (AI) and primary visual (VI). It was further demonstrated that this spread is supported by a spatially matching underlying diffuse network of border-crossing, long-range projections that could also reach deeply into AI and VI. Here we seek to determine whether such a

SUBMITTER: Stehberg J 

PROVIDER: S-EPMC4174042 | biostudies-literature | 2014

REPOSITORIES: biostudies-literature