Function of an eyestalk ganglion, the medulla terminalis

Summary. Ipsilateral antennular dysfunction resulting from total unilateral eyestMk ablation in spiny lobsters does not occur when visual input is restricted by an opaque cap over one eyestMk, or when optic ganglia lone (eg. lamina gangliona-ris, medulla externa, medulla interna) are removed. AnteImular dysfunction appears only when connections between the most proximal of the four eyestMk ganglia, the medulla terminalis, and the remainder of the cerebral ganglia (brain) are inter-rupted. We conclude that neural processing of olfactory input from the angennule involves tructures in the medulla termiualis