Anterior cingulate cortex
It appears to play a role in a wide variety of autonomic functions, such as regulating blood pressure and heart rate.
Claustrum
Recent experiments in mice monitoring claustrocortical axonal activity to changing visual stimuli suggest the claustrum signals stimulus changes. Interestingly 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.