JN AJP: Lung Cellular and Molecular Physiology
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
 QUICK SEARCH:   [advanced]


     


J Neurophysiol (November 5, 2008). doi:10.1152/jn.90815.2008
This Article
Right arrow Full Text (PDF)
Right arrow All Versions of this Article:
101/1/198    most recent
90815.2008v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Khan, A. Z.
Right arrow Articles by Lefevre, P.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Khan, A. Z.
Right arrow Articles by Lefevre, P.
Submitted on July 26, 2008
Revised on October 29, 2008
Accepted on October 30, 2008

Differential influence of attention on gaze and head movements

Aarlenne Zein Khan1, Gunnar Blohm2, Robert M McPeek3, and Philippe Lefevre4*

1 Smith-Kettlewell Eye Research Institute
2 Queen's University
3 The Smith-Kettlewell Eye Research Institute
4 Univ Catholique Louvain

* To whom correspondence should be addressed. E-mail: philippe.lefevre{at}uclouvain.be.

A salient peripheral cue can capture attention, influencing subsequent responses to a target. Attentional cueing effects have been studied for head-restrained saccades; however, under natural conditions, the head contributes to gaze shifts. We asked whether attention influences head movements in combined eye-head gaze shifts, and if so, whether this influence is different for the eye and head components. Subjects made combined eye-head gaze shifts to horizontal visual targets. Prior to target onset, a behaviorally irrelevant cue was flashed at the same (congruent) or opposite (incongruent) location at various stimulus onset asynchrony (SOA) times. We measured eye and head movements and neck muscle EMG signals. Reaction times for the eye and head were highly correlated; both showed significantly shorter latencies (attentional facilitation) for congruent compared to incongruent cues at the two shortest SOAs and the opposite pattern (inhibition of return) at the longer SOAs consistent with attentional modulation of a common eye-head gaze drive. Interestingly, we also found that the head latency relative to saccade onset was significantly shorter for congruent vs. incongruent cues. This suggests a separate effect of attention on the head from that on the eyes.







HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
Visit Other APS Journals Online
Copyright © 2008 by the The American Physiological Society.