کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6259954 | 1290012 | 2011 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Short communicationHand-eye coordination relies on extra-retinal signals: Evidence from reactive saccade adaptation Short communicationHand-eye coordination relies on extra-retinal signals: Evidence from reactive saccade adaptation](/preview/png/6259954.png)
Execution of a saccadic eye movement towards the goal of a hand pointing movement improves the accuracy of this hand movement. Still controversial is the role of extra-retinal signals, i.e. efference copy of the saccadic command and/or ocular proprioception, in the definition of the hand pointing target. We report here that hand pointing movements produced without visual feedback, with accompanying saccades and towards a target extinguished at saccade onset, were modified after gain change of reactive saccades through saccadic adaptation. As we have previously shown that the adaptation of reactive saccades does not influence the target representations that are common to the eye and the hand motor sub-systems (Cotti J, Guillaume A, Alahyane N, Pelisson D, Vercher JL. Adaptation of voluntary saccades, but not of reactive saccades. Transfers to hand pointing movements. J Neurophysiol 2007;98:602-12), the results of the present study demonstrate that extra-retinal signals participate in defining the target of hand pointing movements.
Research highlightsⶠThe role of extra-retinal signals in hand pointing movements remains controversial. ⶠWe induced a gain change in reactive saccades through saccadic adaptation. ⶠHand pointing movements with accompanying saccades were also modified. ⶠAdaptation of reactive saccades does not alter target representation. ⶠWe conclude that extra-retinal signals influence hand pointing movements.
Journal: Behavioural Brain Research - Volume 218, Issue 1, 17 March 2011, Pages 248-252