D. A. Powell
Veterans Health Administration
10 Papers
158 Citations
D. A. Powell is an academic researcher from Veterans Health Administration. The author has contributed to research in topics: Classical conditioning & Eyeblink conditioning. The author has an hindex of 9, co-authored 10 publications.
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Papers
•Journal Article
Cardiac coherence and posttraumatic stress disorder in combat veterans.
TL;DR: Cardiac coherence is an index of strength of control of parasympathetic cardiac deceleration in an individual that has cardinal importance for the individual's attention and affect regulation and was significant post-HRVB training.
Posttraining lesions of the medial prefrontal cortex impair performance of Pavlovian eyeblink conditioning but have no effect on concomitant heart rate changes in rabbits (Oryctolagus cuniculus).
TL;DR: It is suggested that a critical mechanism in the mPFC is involved in retrieval of information during EB conditioning but that themPFC integration of autonomic and somatomotor processes is not critical to this retrieval process.
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Psychophysiological and subjective indices of emotion as a function of age and gender
TL;DR: For instance, this article found that the old and middle-aged groups showed greatly attenuated psychophysiological responses, compared to the young group, when presented with pictorial stimuli that varied in emotional content.
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Prefrontal control of trace versus delay eyeblink conditioning: role of the unconditioned stimulus in rabbits (Oryctolagus cuniculus).
TL;DR: The results suggest that mPFC mediates trace EB conditioning when emotional arousal is low, however, in circumstances when emotional aroused may be high (i.e., during exposure to aversive periorbital shock), other structures may be activated to permit learning even in the absence of input from mP FC.
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Prefrontal control of trace eyeblink conditioning in rabbits: role in retrieval of the CR?
TL;DR: Findings were interpreted to indicate that area 32, but not area 24, is involved in retrieval processes, rather than consolidation or storage, in that the animals were impaired at both retesting times, but were able to relearn the task.
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