Behavorial characteristics of defense and vigilance reactions elecited by electrical stimulation of the hypothalamus in rabbits

Yu Fei Duan, Ray Winters, Philip M. McCabe, Edward J. Green, Ying Huang, Neil Schneiderman

Research output: Contribution to journalArticle

23 Scopus citations

Abstract

An automated tracking system was used to assess the behavioral changes elicited by electrical stimulation of the hypothalamic sites that yield the cardiorespiratory components of defense reaction and vigilance reaction in rabbits. Electrical stimulation of the hypothalamic defense area (HDA) at intensities near threshold led to cessation of body movements coupled with head movements suggesting increased attention to the environment. HDA stimulation at higher intensities evoked agitated running and hindlimb thumping; the amount of running was proportional to stimulus intensity. Electrical stimulation of the hypothalamic vigilance area (HVA) at intensities near threshold elicited orienting behaviors that were similar to those elicited by stimulating the HDA at low suprathreshold current intensities. Stimulation of the hypothalamic vigilance area (HVA) at higher intensities elicited phasic immobility, increased extensor muscle tension, and head tremor. The behavioral changes elicited by HDA and HVA stimulation were accompanied by pupil dilation and exophthalmos.

Original languageEnglish (US)
Pages (from-to)33-41
Number of pages9
JournalBehavioural Brain Research
Volume81
Issue number1-2
DOIs
StatePublished - Nov 1 1996

Keywords

  • affective behavior pattern
  • behavior quantification
  • cardiovascular regulation
  • defense reaction
  • hypothalamus
  • stress response
  • vigilance reaction

ASJC Scopus subject areas

  • Behavioral Neuroscience

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