Depressant effect of cooling of the postero-lateral occipital cortex on pupillo-constriction responses evoked from the lateral suprasylvian area in cats.

In anesthetized cats, the postero-lateral occipital cortex corresponding to area 20 was temporarily cooled. Pupillary constriction responses evoked from the middle part of the ipsilateral lateral suprasylvian area (the PMLS of Palmer et al.) decreased by about 50% in amplitude during cooling. These results demonstrate a functional liaison between area 20 and the PMLS.