Postural and eye-blink reactions to acoustic startle probes were examined in 24 volunteers, who completed two blocked conditions (baseline, startle). A postural reaction during the startle condition demonstrated a reflexive movement in the anterior-posterior direction, which was not observed during the baseline condition. This reflexive response was positively associated with the eye-blink reflex, such that larger blink magnitude related to greater posterior movement. These findings were not observed for postural movements in the medial-lateral direction. The results suggest that a measurable postural reaction may be observed following a startling acoustic stimulus, which may reflect generalized bodily flexion associated with a preparatory behavioral response.

Original languageEnglish (US)
Pages (from-to)45-49
Number of pages5
JournalInternational Journal of Psychophysiology
Issue number1
StatePublished - Jan 2005


  • Approach-withdrawal
  • Avoidance behavior
  • Center of pressure
  • Eye-blink reflex
  • Postural sway
  • Posture

ASJC Scopus subject areas

  • Behavioral Neuroscience


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