Correlation between long latency evoked potentials from amygdala and evoked cardiac response to fear conditioned stimulus in rats
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We investigated relation between activity of central nucleus of amygdala (CE) and phasic heart rate deceleration during differential fear conditioning. We found that P2 component of long-lasting event potential (EP) to CS+ but not to CS- correlated strongly with HR deceleration in the 1st second after stimulus onset. Obtained results are discussed in the light of LeDoux?s and Kapp?s findings showing crucial role of amygdala in processing of emotionally relevant stimulation and it?s involvement in initiating autonomic responses.
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M. Kuniecki, Department of Psychophysiology, Institute of Psychology, Jagiellonian University, Krakow, Poland