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Corrigendum for Loftus and Sutter, J Neurophysiol 86 (1) 475-491.
J Neurophysiol 86: 1a, 2001;
0022-3077/01 $5.00
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The Journal of Neurophysiology Vol. 86 No. 6 December 2001

CORRIGENDUM

Volume 86, July 2001

Pages 475-491: W. C. Loftus and M. L. Sutter, "Spectrotemporal Organization of Excitatory and Inhibitory Receptive Fields of Cat Posterior Auditory Field Neurons." Text was inadvertently omitted after the fourth sentence of the section entitled SPECTROTEMPORAL RFS (page 477). The corrected paragraph, with the missing text included, is presented below.
SPECTROTEMPORAL RFS.  Spectrotemporal receptive fields (STRFs) were constructed for each neuron. STRFs, representing the average stimulus preceding each spike in the form of a spectrograph, were constructed by a standard "reverse correlation" algorithm that computed the average spectrograph preceding each action potential (DeAngelis et al. 1993; deCharms et al. 1998a). By convention, the STRF time axis is inverted so that the average stimulus is represented in negative time and the time of each spike is defined as zero. Portions of the average stimulus that precede the action potential by a greater amount of time are found at more negative times. We also computed STRFs as three-dimensional histograms where the y-axis represents the frequency of 50 ms pure tone stimuli, and the x-axis represents the time of action potentials relative to tone onset. The color at each coordinate represents the number of action potentials that responded to a particular frequency with a particular latency. Since the time dimension represents the spike time relative to stimulus onset, each action potential contributes to only one point in this type of STRF plot. This STRF analysis was used for Fig. 8 and Table 1. The temporal resolution of the STRFs was 1 ms; the frequency resolution was the same as for the pure-tone FRA because these tones were used to derive the STRF. Each STRF was smoothed by a circular Gaussian (standard deviations: 2 ms along the time axis; dependent on the range and number of frequencies used along the frequency axis).

Copyright © 2001 The American Physiological Society



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