The viscosity of the endolymph in Pagothenia borchgrevinki and Dissostichus mawsoni to assess the relative degrees of cold compensation at different stages in the vestibulo-ocular reflex arc

Endolymph (inner ear fluid) from the semicircular canals was collected from Pagothenia borchgrevinki and Dissostichus mawsoni by dissecting the mid brain to expose the intact vestibular apparatus. Samples from ~30 fish was pooled to determine viscosity. The viscosity values were used in a mathematical model of the vestibulo-ocular reflex to assess the relative degrees of cold compensation at different stages in the reflex arc.