FM-FM combination-sensitive neurons in the mustached bat's auditory cortex.
نویسندگان
چکیده
منابع مشابه
Syntax processing by auditory cortical neurons in the FM-FM area of the mustached bat Pteronotus parnellii.
Syntax denotes a rule system that allows one to predict the sequencing of communication signals. Despite its significance for both human speech processing and animal acoustic communication, the representation of syntactic structure in the mammalian brain has not been studied electrophysiologically at the single-unit level. In the search for a neuronal correlate for syntax, we used playback of n...
متن کاملFacilitatory and inhibitory frequency tuning of combination-sensitive neurons in the primary auditory cortex of mustached bats.
Mustached bats, Pteronotus parnellii parnellii, emit echolocation pulses that consist of four harmonics with a fundamental consisting of a constant frequency (CF(1-4)) component followed by a short, frequency-modulated (FM(1-4)) component. During flight, the pulse fundamental frequency is systematically lowered by an amount proportional to the velocity of the bat relative to the background so t...
متن کاملCombination-sensitive neurons in the primary auditory cortex of the mustached bat.
In the mustached bat, Pteronotus parnellii, neurons in the primary auditory cortex (AI) have been thought to respond primarily to single frequencies, as in other mammals. However, neurons in the Doppler-shifted constant-frequency (DSCF) area, a part of the mustached bat's AI that contains an overrepresentation of the prominent CF2 component of the biosonar signal, were found to show facilitativ...
متن کاملDelay-tuned combination-sensitive neurons in the auditory cortex of the vocalizing mustached bat.
1. FM-FM neurons in the auditory cortex of the mustached bat are sensitive to a pair of frequency-modulated (FM) sounds that simulates an FM component of the orientation sound and an FM component of the echo. These neurons are tuned to particular delays between the two FM components, suggesting an encoding of target range information. The response properties of these FM-FM neurons, however, hav...
متن کاملCorticofugal amplification of facilitative auditory responses of subcortical combination-sensitive neurons in the mustached bat.
Recent studies on the bat's auditory system indicate that the corticofugal system mediates a highly focused positive feedback to physiologically "matched" subcortical neurons, and widespread lateral inhibition to physiologically "unmatched" subcortical neurons, to adjust and improve information processing. These findings have solved the controversy in physiological data, accumulated since 1962,...
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ژورنال
عنوان ژورنال: Proceedings of the Japan Academy, Series B
سال: 1990
ISSN: 0386-2208,1349-2896
DOI: 10.2183/pjab.66.15