JN AJP: Gastrointestinal and Liver Physiology
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
QUICK SEARCH:   [advanced]


     

J Neurophysiol 40: 997-1014, 1977;
0022-3077/77 $5.00
This Article
Right arrow Full Text (PDF)
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Dykes, R. W.
Right arrow Articles by Publicover, N. G.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Dykes, R. W.
Right arrow Articles by Publicover, N. G.

Journal of Neurophysiology, Vol 40, Issue 5 997-1014, Copyright © 1977 by APS

ARTICLES

Somatotopic projections of mystacial vibrissae on cerebral cortex of cats

R. W. Dykes, J. D. Dudar, D. G. Tanji and N. G. Publicover

1. Using classical evoked-potential techniques and 100-micron deflections of one vibrissa, at least three loci of potentials were identified in cats' cortices. 2. The relationships of these loci to cortical landmarks and to each other varied sufficiently to prevent specification of homologies between animals. 3. Attempts to differentiate the loci on functional criteria were unsuccessful. The areal extent of each locus appeared similar and there was evidence of a specific somatotopic pattern within each locus; in each locus different vibrissae were represented at different cortical points. 4. Latencies differed slightly between the loci, being shortest at the most rostral site and longest at the caudal site. In all loci, off-center latencies were longer, but this difference was detected only after complete maps of all three loci were produced. 5. The focus of potentials for an individual vibrissa was radically different, depending on the parameter measured (negative peak, positive peak, and latency). The focus of potentials could also be shifted by changing the velocity or direction of the stimulus. 6. The effects of these stimulus parameters on the cortical map suggest that a cortical focus represents more than simply a point on the skin surface.


This article has been cited by other articles:


Home page
 J. Neurosci.Home page
Y. Zhu, R. L. Stornetta, and J. J. Zhu
Chandelier Cells Control Excessive Cortical Excitation: Characteristics of Whisker-Evoked Synaptic Responses of Layer 2/3 Nonpyramidal and Pyramidal Neurons
J. Neurosci., June 2, 2004; 24(22): 5101 - 5108.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurosci.Home page
Y. Zhu and J. J. Zhu
Rapid Arrival and Integration of Ascending Sensory Information in Layer 1 Nonpyramidal Neurons and Tuft Dendrites of Layer 5 Pyramidal Neurons of the Neocortex
J. Neurosci., February 11, 2004; 24(6): 1272 - 1279.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurosci.Home page
M. E. Larkum and J. J. Zhu
Signaling of Layer 1 and Whisker-Evoked Ca2+ and Na+ Action Potentials in Distal and Terminal Dendrites of Rat Neocortical Pyramidal Neurons In Vitro and In Vivo
J. Neurosci., August 15, 2002; 22(16): 6991 - 7005.
[Abstract] [Full Text] [PDF]

Home page
 J. Neurophysiol.Home page
J. J. Zhu and B. W. Connors
Intrinsic Firing Patterns and Whisker-Evoked Synaptic Responses of Neurons in the Rat Barrel Cortex
J Neurophysiol, March 1, 1999; 81(3): 1171 - 1183.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Visit Other APS Journals Online