دانلود مقاله ISI انگلیسی شماره 128690
عنوان انگلیسی
Visual object separation resolves competitive interactions in somatosensory cortex evoked signals during concurrent vibrotactile stimulation of the left and right hand
کد مقاله سال انتشار تعداد صفحات مقاله انگلیسی
128690 2017 9 صفحه PDF
منبع

Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)

Journal : Biological Psychology, Volume 125, April 2017, Pages 154-162

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چکیده انگلیسی

We investigated the effect of visual separation of left and right hemispaces within peripersonal space to sustained tactile spatial attention processing and showed that visually perceived object separation weakened the competitive interaction for concurrent vibrotactile stimulation to two hands. Participants received concurrent vibrotactile stimulation at different frequencies on two hands (right: 20 Hz; left: 24 Hz) for 4500 ms to elicit steady-state somatosensory evoked potentials (SSSEPs). They attended to one of the stimulated hands and reacted to rare transient events embedded in the attended ongoing stream. Behavioral and neurophysiological results reveal that separation of spatial representation of tactile event locations could facilitate bilateral tactile spatial selection in sustained attention processing. Visual separation by a gap between hands increased the magnitude of attentional gain in SSSEPs compared to the situation when no gap was present. Results suggest that visual separation resolved the competition between concurrent tactile stimulation on two hands.