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Model of Song Selectivity and Sequence Generation in Area HVc of the Songbird

Summary: Model of Song Selectivity and Sequence Generation in Area HVc
of the Songbird
Patrick J. Drew and L. F. Abbott
Volen Center for Complex Systems and Department of Biology, Brandeis University, Waltham, Massachusetts 02454-9110
Submitted 12 September 2002; accepted in final form 13 January 2003
Drew, Patrick J. and L. F. Abbott. Model of song selectivity and sequence
generation in area HVc of the songbird. J Neurophysiol 89: 26972706,
2003;; 10.1152/jn.00801.2002. In songbirds, nucleus HVc plays a key
role in the generation of the syllable sequences that make up a song.
Auditory responses of neurons in HVc are selective for single sylla-
bles and for combinations of syllables occurring in temporal se-
quences corresponding to those in the bird's own song. We present a
model of HVc that produces syllable- and temporal-combination-
selective responses on the basis of input from recorded bird songs
filtered through spectral temporal receptive fields similar to those
measured in field L, a primary auditory area. Normalization of the
field L outputs, similar to that proposed in models of visual process-
ing, plays an important role in the generation of syllable-selective
responses in the model. For temporal-combination-selective re-
sponses, N-methyl-D-aspartate (NMDA) conductances provide a


Source: Abbott, Laurence - Center for Neurobiology and Behavior & Department of Physiology and Cellular Biophysics, Columbia University


Collections: Biology and Medicine