City Research Online

Abstract

Mechanisms underlying pure tactile attentional selection were investigated. Tactile imperative stimuli were preceded by symbolic tactile cues directing attention to the left or right (directional cues), or to both hands (non-directional cues). Comparison of ERP waveforms on directional and non-directional cue trials showed that attentional modulations at N140 and P200 components reflect mainly enhancement of stimuli at the attended, while longer latency modulations reflect mainly suppression of processing of stimuli at the unattended location. This pattern of results differs from analogous studies involving other modalities suggesting that different mechanisms underlie pure tactile attention. Furthermore, ERPwaveforms on non-directional cue trialswere enhanced in comparison to directional cue trials at the P100 component and at longer latencies, indicating that tactile attentional mechanisms may differ when attending to one compared to multiple locations.

Publication Type:	Article
Publisher Keywords:	Social Sciences, Science & Technology, Life Sciences & Biomedicine, Psychology, Biological, Neurosciences, Physiology, Psychology, Psychology, Experimental, Neurosciences & Neurology, NEUROSCIENCES, PHYSIOLOGY, PSYCHOLOGY, PSYCHOLOGY, BIOLOGICAL, PSYCHOLOGY, EXPERIMENTAL, Transient attention, Somatosensation, ERP, Tactile cueing, Spatial selection, EVENT-RELATED POTENTIALS, NEURAL MECHANISMS, SPATIAL ATTENTION
Subjects:	B Philosophy. Psychology. Religion > BF Psychology
Departments:	School of Health & Psychological Sciences > Psychology
SWORD Depositor:	Symplectic Administrator

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