PMID: 1213178Apr 1, 1975Paper

Frequency characteristics of central auditory neurons following a decrease in the number of periods of excitatory pure tones

Fiziologicheskiĭ zhurnal SSSR imeni I. M. Sechenova
I A Vartanian, G V Gershuni

Abstract

In anesthetized rats, frequency-threshold curves of the inferior colliculus neurons to signals with various number of cycles in a pure tone burst (n=1;10;f/1000X50), were estimated. A great majority of neurons were characterized by pronounced frequency selectivity even to signals containing one cycle. Response thresholds mainly depended on the tone frequency; the maximal threshold sensitivity was obtained at the same frequency when tested with 1 or 10/sec sine wave and 50 msec duration tone. Sharpness of the frequency-threshold curve depends both on duration of signal and discharge pattern of the neuron: when the signal duration decreases sharpening of the frequency-threshold is observed in neurons with initial response, while flattening of the frequency-threshold curve is observed in neurons with sustained response.

Related Concepts

Related Feeds

Auditory Perception

Auditory perception is the ability to receive and interpret information attained by the ears. Here is the latest research on factors and underlying mechanisms that influence auditory perception.