Editing Claustrum (section)

===Rodents===
In rats, motor whisker areas receive input from the ipsilateral claustrum but will then project to the contralateral claustrum.<ref name="Brown" /> The sensory barrel cortex and primary visual cortex also receive input from the ipsilateral claustrum but send very few projection back to the claustrum. Studies therefore indicate distinct patterning of connectivity of claustrum with different cortical areas. These suggest, rather than a diffuse role, they play specialized roles in cortical processing.<ref name="Brown" />

In mice, parvalbumin fibres are highly interconnected by chemical and electrical synapses. They are additionally also highly interconnected with claustrocortical neurons – suggesting that these inhibitory interneurons strongly modulate their activity.<ref name="Brown" /> These local networks suggest to synchronize activity of claustrocortical projections to therefore influence brain rhythms and co-ordinated activity of different cortical brain regions. There are additional classes of inhibitory interneurons with local connections within the claustrocortical neurons.<ref name="Brown" />

Experiments in mice monitoring claustrocortical axonal activity to changing visual stimuli suggest the claustrum signals stimulus changes.<ref name="Brown" /> Although claustrocortical input to visual cortical areas were engaged, the strongest responses measured were in higher-order regions of the cortex, this included the anterior cingulate cortex which is densely innervated by claustral projection.<ref name="Brown" />