Stimulus change detection in phasic auditory units in the frog midbrain: frequency and ear specific adaptation.

ABSTRACT: Neural adaptation, a reduction in the response to a maintained stimulus, is an important mechanism for detecting stimulus change. Contributing to change detection is the fact that adaptation is often stimulus specific: adaptation to a particular stimulus reduces excitability to a specific subset of stimuli, while the ability to respond to other stimuli is unaffected. Phasic cells (e.g., cells responding to stimulus onset) are good candidates for detecting the most rapid changes in natural auditory scenes, as they exhibit fast and complete adaptation to an initial stimulus presentation. We made recordings of single phasic auditory units in the frog midbrain to determine if adaptation was specific to stimulus frequency and ear of input. In response to an instantaneous frequency step in a ton

SUBMITTER: Ponnath A 

PROVIDER: S-EPMC3700364 | biostudies-literature | 2013 Apr

REPOSITORIES: biostudies-literature