Laboratories \ Laboratory for The Sensory Systems of Vertebrates \ Goals and Tasks . Goals and Tasks . ... Electrophysiological Laboratory at the Utrish Marine Station . ... In the field of cetaceans hearing research: . ... Acuteness of the frequency selectivity (quality of the filters canals in the auditory system) in different species of dolphins constitutes the range of 30 to 50 that is 3-5 times higher than in most terrestrial mammals (excluding bats) and humans (about 10). ...