Skip to main content

Event-related potential correlates of phasic and tonic measures of the Orienting Reflex

Journal Article


Abstract


  • We examined putative central nervous system (CNS) indices of tonic and phasic aspects of the orienting reflex (OR) in a passive event-related

    potential (ERP) dishabituation paradigm. Pre-stimulus skin conductance level (SCL) and the subsequent skin conductance response (SCR) were

    used as tonic and phasic OR ÃÂÃÂÃÂÃÂÃÂÃÂÃÂâÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂâÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂyard-sticksÃÂÃÂÃÂÃÂÃÂÃÂÃÂâÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂâÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ, respectively. Their stimulusÃÂÃÂÃÂÃÂÃÂÃÂÃÂâÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂresponse patterns were used to assess two ERP components: the tonic prestimulus

    contingent negative variation (CNV) and the subsequent phasic late positive complex (LPC). SCLs and SCRs derived from each trial of

    the first train presented were compatible with traditional OR studies. Across-train means were also derived for each of the four measures examined.

    Arousal changes, as indexed by the SCL, were weak in the CNV which showed an additional expectancy effect. The LPC showed a stimulusÃÂÃÂÃÂÃÂÃÂÃÂÃÂâÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ

    response pattern across trials identical to that of the SCR. This study clarifies links between the traditional autonomic measures of the indifferent

    OR and its CNS correlates, and encourages an OR perspective and/or interpretation of ERP effects.

Publication Date


  • 2007

Citation


  • Rushby, J. A. & Barry, R. J. (2007). Event-related potential correlates of phasic and tonic measures of the Orienting Reflex. Biological Psychology, 75 (3), 248-259.

Scopus Eid


  • 2-s2.0-34250176927

Ro Metadata Url


  • http://ro.uow.edu.au/hbspapers/3282

Number Of Pages


  • 11

Start Page


  • 248

End Page


  • 259

Volume


  • 75

Issue


  • 3

Place Of Publication


  • http://www.elsevier.com.ezproxy.uow.edu.au:2048/locate/biopsycho

Abstract


  • We examined putative central nervous system (CNS) indices of tonic and phasic aspects of the orienting reflex (OR) in a passive event-related

    potential (ERP) dishabituation paradigm. Pre-stimulus skin conductance level (SCL) and the subsequent skin conductance response (SCR) were

    used as tonic and phasic OR ÃÂÃÂÃÂÃÂÃÂÃÂÃÂâÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂâÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂyard-sticksÃÂÃÂÃÂÃÂÃÂÃÂÃÂâÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂâÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ, respectively. Their stimulusÃÂÃÂÃÂÃÂÃÂÃÂÃÂâÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂresponse patterns were used to assess two ERP components: the tonic prestimulus

    contingent negative variation (CNV) and the subsequent phasic late positive complex (LPC). SCLs and SCRs derived from each trial of

    the first train presented were compatible with traditional OR studies. Across-train means were also derived for each of the four measures examined.

    Arousal changes, as indexed by the SCL, were weak in the CNV which showed an additional expectancy effect. The LPC showed a stimulusÃÂÃÂÃÂÃÂÃÂÃÂÃÂâÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂÃÂ

    response pattern across trials identical to that of the SCR. This study clarifies links between the traditional autonomic measures of the indifferent

    OR and its CNS correlates, and encourages an OR perspective and/or interpretation of ERP effects.

Publication Date


  • 2007

Citation


  • Rushby, J. A. & Barry, R. J. (2007). Event-related potential correlates of phasic and tonic measures of the Orienting Reflex. Biological Psychology, 75 (3), 248-259.

Scopus Eid


  • 2-s2.0-34250176927

Ro Metadata Url


  • http://ro.uow.edu.au/hbspapers/3282

Number Of Pages


  • 11

Start Page


  • 248

End Page


  • 259

Volume


  • 75

Issue


  • 3

Place Of Publication


  • http://www.elsevier.com.ezproxy.uow.edu.au:2048/locate/biopsycho