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Titolo:
Responses to linear and logarithmic frequency-modulated sweeps in ferret primary auditory cortex
Autore:
Nelken, I; Versnel, H;
Indirizzi:
Hebrew Univ Jerusalem, Hadassah Med Sch, Dept Physiol, IL-91120 Jerusalem,Israel Hebrew Univ Jerusalem Jerusalem Israel IL-91120 L-91120 Jerusalem,Israel Hebrew Univ Jerusalem, Interdisciplinary Ctr Neural Computat, IL-91120 Jerusalem, Israel Hebrew Univ Jerusalem Jerusalem Israel IL-91120 -91120 Jerusalem, Israel Univ Nijmegen, Dept Med Phys & Biophys, Nijmegen, Netherlands Univ Nijmegen Nijmegen Netherlands hys & Biophys, Nijmegen, Netherlands
Titolo Testata:
EUROPEAN JOURNAL OF NEUROSCIENCE
fascicolo: 2, volume: 12, anno: 2000,
pagine: 549 - 562
SICI:
0953-816X(200002)12:2<549:RTLALF>2.0.ZU;2-9
Fonte:
ISI
Lingua:
ENG
Soggetto:
MUSTELA-PUTORIUS; FUNCTIONAL TOPOGRAPHY; COMPLEX SOUNDS; ORGANIZATION; SENSITIVITY; NEURONS; STIMULI; ANTERIOR; TONES;
Keywords:
auditory system; cluster activity; complex sounds; frequency modulation; topography;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
19
Recensione:
Indirizzi per estratti:
Indirizzo: Nelken, I Hebrew Univ Jerusalem, Hadassah Med Sch, Dept Physiol, POB 12272, IL-91120Jerusalem, Israel Hebrew Univ Jerusalem POB 12272 Jerusalem Israel IL-91120 srael
Citazione:
I. Nelken e H. Versnel, "Responses to linear and logarithmic frequency-modulated sweeps in ferret primary auditory cortex", EUR J NEURO, 12(2), 2000, pp. 549-562

Abstract

Multi-unit responses to frequency-modulated (FM) sweeps were studied in the primary auditory cortex of ferrets using six different stimulation paradigms. In particular, the differences between the responses to linear FM sweeps (where frequency changes linearly with time) and logarithmic FM sweeps (where frequency changes exponentially with time) were emphasized. Some general features of the responses to FM sweeps are independent of the exact details of the frequency trajectory. Both for linear and for logarithmic FM sweeps, a short burst of spikes occurred when the sweep reached a triggering frequency close to the best frequency of the cluster. The neuronal preference for FM velocity was also independent of frequency trajectory. Thus, clusters that responded best to slow logarithmic FM also preferred slow linear FM and vice versa. Consequently, topographic distributions of velocity preference were roughly independent of the stimulation paradigm. Other characteristics of the responses, however, depended on the exact details of the frequency trajectory. A significant number of clusters showed large differences in directional sensitivity between linear and logarithmic FM sweeps; these differences depended on the velocity preference of the clusters in some paradigms but not in others. Consequently, topographic distributions of directional sensitivity differed between linear and logarithmic paradigms. In conclusion, some characteristics of cluster responses to FM sweeps depend onthe exact details of the stimulation paradigm and are not 'invariants' of the cluster.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/04/20 alle ore 04:14:24