Correlation between unit activity of the auditory cortex and the conditioned blink reflex in cats

1973 ◽  
Vol 6 (3) ◽  
pp. 189-196
Author(s):  
U. G. Gasanov
Keyword(s):  
Auditory Cortex ◽  
Unit Activity ◽  
Blink Reflex ◽  
Conditioned Blink

Unit activity in auditory cortex of conscious rabbit

1979 ◽  
Vol 65 (S1) ◽  
pp. S87-S87 ◽  
Author(s):  
N. Kraus Perkins ◽  
J. F. Disterhoft
Keyword(s):  
Auditory Cortex ◽  
Unit Activity ◽  
Conscious Rabbit

Modification of auditory and somatosensory system activity during pupillary conditioning in the paralyzed cat

1975 ◽  
Vol 38 (5) ◽  
pp. 1114-1139 ◽  
Author(s):  
T. D. Oleson ◽  
J. H. Ashe ◽  
N. M. Weinberger
Keyword(s):  
Auditory Cortex ◽  
Unit Activity ◽  
Cochlear Nucleus ◽  
Sensory System ◽  
Sensory Receptor ◽  
Pupillary Dilation ◽  
Cuneate Nucleus ◽  
Somatic Cortex ◽  
Multiple Unit ◽  
Conditioned Responses

The role of sensory systems in the development of behavioral conditioned responses was investigated by recording multiple-unit activity in the auditory and somatosensory pathways during Pavlovian conditioning of the pupillary-dilation responses of paralyzed cats. Establishment of conditioned pupillary-dilation responses to a white noise CS+, pupillary discrimination between the CS+ and a tone CS-, and subsequent discrimination reversal provided the behavioral foundation for examining neural changes related to behavioral learning. Multiple-unit responses to the acoustic CS+ were significantly enhanced in the auditory cortex, cochlear nucleus, and somatic cortex, but not in the cuneate nucleus. The possibility that these effects could be due to changes in stimulus intensity at the sensory receptor, to mo-ement artifacts, or to feedback from skeletal responses were ruled out because the animals were immobilized. Nor could these neural changes be attributable to sensitization, as those brain areas which showed conditioned enhancement to the CS+ exhibited significantly larger responses to the CS+ than to the CS-. Furthermore, the changes in neural activity followed the significance of the CS; after reversal of the reinforcement contingencies, the amount of multiple-unit activity evoked by the stimuli gradually reversed too. Although the somatic cortex showed conditioning and discrimination, greater stimulus specificity was found in the auditory system. Only in the somatic cortex was there a significant increase in responses to the CS- as well as the CS4. Furthermore, both somatosensory loci exhibited enhanced responses to those tactile probes presented during the acoustic CS, suggesting a phasic increase in neural excitability to all stimuli. Analysis of the number of trials required to attain an acquisition criterion indicated that the neural changes occurred first in the auditory cortex, then the cochlear nucleus, followed in turn by the somatic cortex, and finally the cuneate nucleus. However, none of these neural changes preceded acquisition of conditioned pupillary dilations. These results suggest that sensory system changes are not essential for the initial associative process. These findings indicate that the study of autonomic conditioned responses may prove beneficial in seeking the critical neural events which underlie the initial association between two stimuli. A hypothetical model, which explains the development of pupillary and sensory system conditioned responses, was also presented.

Single‐Unit Activity in the Primary Auditory Cortex of Unanesthetized Cats

1968 ◽  
Vol 43 (3) ◽  
pp. 444-455 ◽  
Author(s):  
Moise H. Goldstein ◽  
Joseph L. Hall ◽  
Bruce O. Butterfield
Keyword(s):  
Auditory Cortex ◽  
Unit Activity ◽  
Single Unit ◽  
Primary Auditory Cortex ◽  
Single Unit Activity

scholarly journals Single Unit Activity in the Auditory Cortex of an Unanaesthetized Monkey

1960 ◽  
Vol 36 (7) ◽  
pp. 435-438 ◽  
Author(s):  
Yasuji KATSUKI ◽  
Keiichi MURATA ◽  
Nobuo SUGA ◽  
Toshifumi TAKENAKA
Keyword(s):  
Auditory Cortex ◽  
Unit Activity ◽  
Single Unit ◽  
Single Unit Activity

scholarly journals Large-Scale Heterogeneous Representation of Sound Attributes in Rat Primary Auditory Cortex: From Unit Activity to Population Dynamics

2011 ◽  
Vol 31 (41) ◽  
pp. 14639-14653 ◽  
Author(s):  
T. Ogawa ◽  
J. Riera ◽  
T. Goto ◽  
A. Sumiyoshi ◽  
H. Nonaka ◽  
...  
Keyword(s):  
Population Dynamics ◽  
Auditory Cortex ◽  
Unit Activity ◽  
Large Scale ◽  
Primary Auditory Cortex
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