Inequality in identification of direction of frequency change (up vs. down) for rapid frequency modulated sweeps
نویسندگان
چکیده
منابع مشابه
Inequality in identification of direction of frequency change (up vs. down) for rapid frequency modulated sweeps
The abilities of human subjects to identify direction (up vs. down) of frequency modulation (FM) of individual tone sweeps at various rates of FM are examined, in particular, how fast FM sweeps can be without impairing a subject’s ability to accurately identify them as upward or downward. This ability may be relevant to the auditory encoding of rapid formant transitions, important perceptual cu...
متن کاملGABA shapes selectivity for the rate and direction of frequency-modulated sweeps in the auditory cortex.
In the pallid bat auditory cortex and inferior colliculus (IC), the majority of neurons tuned in the echolocation range is selective for the direction and rate of frequency-modulated (FM) sweeps used in echolocation. Such selectivity is shaped mainly by spectrotemporal asymmetries in sideband inhibition. An early-arriving, low-frequency inhibition (LFI) shapes direction selectivity. A delayed, ...
متن کاملDevelopment of inhibitory mechanisms underlying selectivity for the rate and direction of frequency-modulated sweeps in the auditory cortex.
Although it is known that neural selectivity for species-specific vocalizations changes during development, the mechanisms underlying such changes are not known. This study followed the development of mechanisms underlying selectivity for the direction and rate of frequency-modulated (FM) sweeps in the auditory cortex of the pallid bat, a species that uses downward FM sweeps to echolocate. In t...
متن کاملFacilitatory mechanisms underlying selectivity for the direction and rate of frequency modulated sweeps in the auditory cortex.
Neurons selective for frequency modulated (FM) sweeps are common in auditory systems across different vertebrate groups and may underlie representation of species-specific vocalizations. Studies on mechanisms of FM sweep selectivity have primarily focused on sideband inhibition. Here, we present the first evidence for facilitatory mechanisms of FM sweep selectivity. Facilitatory interactions we...
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ژورنال
عنوان ژورنال: Acoustics Research Letters Online
سال: 2002
ISSN: 1529-7853
DOI: 10.1121/1.1429653