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Alteration in footshock threshold by low-level septal brain stimulation

Authors
Journal
Physiology & Behavior
0031-9384
Publisher
Elsevier
Publication Date
Volume
5
Issue
7
Identifiers
DOI: 10.1016/0031-9384(70)90268-4
Keywords
  • Septal Area
  • Septal Brain Stimulation
  • Footshock Threshold

Abstract

Abstract Thirteen male, hooded rats with chronically implanted electrodes in the septal area were trained to bar press for intracranial stimulation (SICS) to determine whether the electrode locus was in a reward zone, and then were tested for footshock threshold in a highly-sensitive startle chamber in the presence and absence of SICS on randomly alternated days. SICS (a) significantly decreased startle responses to all footshock levels, (b) decreased magnitude of startle to footshock, and (c) was least effective in altering footshock threshold when the electrode locus was in a reward zone. Effects (a) and (b) were most prominent in initial test periods, but diminished over subsequent sessions.

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