Firing rate and firing synchrony distinguish dynamic from steady state sound
- 1 August 1997
- journal article
- research article
- Published by Wolters Kluwer Health in NeuroReport
- Vol. 8 (12) , 2709-2713
- https://doi.org/10.1097/00001756-199708180-00014
Abstract
THE role of firing-rate and firing synchrony within and between three auditory cortical areas in coding complex sounds was investigated. In cortex, steady-state sound rarely caused any difference in firing rate over the spontaneous rate, but induced greater neural synchrony within and between cortical areas than were present during silence. Dynamic changes, other than onsets, produced similar synchrony as steady-state stimulation, but the firing rates were significantly larger in each cortical area than for steady-state sound. This suggests that the firing rate signals the difference between dynamic and steady-state stimulation. Because firing rates are high for stimulus onsets, the combination of firing rate and intercortical synchrony may distinguish between dynamic and steady-state stimuli and silence.Keywords
This publication has 7 references indexed in Scilit:
- Primary cortical representation of sounds by the coordination of action-potential timingNature, 1996
- Rate covariance dominates spontaneous cortical unit-pair correlogramsNeuroReport, 1995
- Neural correlates of gap detection and auditory fusion in cat auditory cortexNeuroReport, 1995
- Representation of a voice onset time continuum in primary auditory cortex of the catThe Journal of the Acoustical Society of America, 1995
- Neural interaction in cat primary auditory cortex II. Effects of sound stimulationJournal of Neurophysiology, 1994
- Neural interaction in cat primary auditory cortex. Dependence on recording depth, electrode separation, and ageJournal of Neurophysiology, 1992
- Acquired word deafness, and the temporal grain of sound representation in the primary auditory cortexBehavioural Brain Research, 1990