Abstract
Small bats (microchiroptera) get various types of information about their targeted objects by comparing returning echoes to emitted ultrasonic pulses, which is called “Biosonar”. This paper introduces the outline of biosonar, and then explains consistency and plasticity of vocalization, changes in vocalization due to relationships between targets and the bat. This paper also describes how they vocalize for the real-time time-sharing signal processing based upon data obtained with an onboard telemetry microphone system and data recorded with reversible focal inactivation of neural activities. Amazing real-time time-sharing signal processing performed by a brain as small as the tip of our little finger will be explained.
