کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6028890 1580922 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dissociation of reach-related and visual signals in the human superior colliculus
ترجمه فارسی عنوان
تفکیک سیگنال های مرتبط و بصری در حواس پرتی انسان
موضوعات مرتبط
علوم زیستی و بیوفناوری علم عصب شناسی علوم اعصاب شناختی
چکیده انگلیسی
Electrophysiological and micro-stimulation studies in non-human animal species indicated that the superior colliculus (SC) plays a role in the control of upper limb movements. In our previous work we found reach-related signals in the deep superior colliculus in humans. Here we show that also signals in more dorsal locations are correlated with the execution of arm movements. We instructed healthy participants to reach for visual targets either presented in the left or in the right visual hemifield during an fMRI measurement. Visual stimulation was dissociated from movement execution using a pro- and anti-reaching task. Thereby, we successfully differentiated between signals at these locations induced by the visual input of target presentations on the one hand and by the execution of arm movements on the other hand. Extending our previous report, the results of this study are in good agreement with the observed anatomical distribution of reach-related neurons in macaques. Obviously, reach-related signals can be found across a considerable depth range also in humans.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: NeuroImage - Volume 82, 15 November 2013, Pages 61-67
نویسندگان
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