Perception of Distance in Animal Echo-Location

摘要: THE frequency sweep used by some bats is unlikely to be essential for distance perception these animals, and possibly no more than an accidental consequence of their method sound production. When the cricothyroid muscles larynx Eptesicus are denervated modulation altogether absent becomes constant at about 10 kc. Yet such land normally on walls avoid obstacles moderate size. A slight decline in performance can attributed greater wave-length reduced vigour as a result surgical operation1.