ERP investigation of transient attentional selection of single and multiple locations within touch.

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, ERP waveforms on non-directional cue trials were 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.

[1]  Durk Talsma,et al.  Attentional orienting across the sensory modalities , 2008, Brain and Cognition.

[2]  Helge Gillmeister,et al.  Viewing the body modulates neural mechanisms underlying sustained spatial attention in touch , 2009, The European journal of neuroscience.

[3]  Jan Theeuwes,et al.  Faster, more intense! The relation between electrophysiological reflections of attentional orienting, sensory gain control, and speed of responding , 2007, Brain Research.

[4]  M. Schoenfeld,et al.  Attention to somatosensory events is directly linked to the preparation for action , 2009, Journal of the Neurological Sciences.

[5]  Bettina Forster,et al.  ERP correlates of tactile spatial attention differ under intra- and intermodal conditions , 2009, Biological Psychology.

[6]  Seppo P. Ahlfors,et al.  Biasing the brain’s attentional set: I. Cue driven deployments of intersensory selective attention , 2005, Experimental Brain Research.

[7]  E. Golob,et al.  Preparatory slow potentials and event-related potentials in an auditory cued attention task , 2002, Clinical Neurophysiology.

[8]  M. Posner,et al.  Attention and the detection of signals. , 1980, Journal of experimental psychology.

[9]  E. Schröger,et al.  Endogenous Covert Spatial Orienting in Audition Cost-Benefit Analyses of Reaction Times and Event related Potentials , 1997 .

[10]  R. Desimone,et al.  Neural mechanisms of selective visual attention. , 1995, Annual review of neuroscience.

[11]  Martin Eimer,et al.  Covert attention in touch: behavioral and ERP evidence for costs and benefits. , 2005, Psychophysiology.

[12]  Martin Eimer,et al.  Temporal dynamics of lateralized ERP components elicited during endogenous attentional shifts to relevant tactile events. , 2002, Psychophysiology.

[13]  Steven A. Hillyard,et al.  Effects of spatial cuing on luminance detectability: Psychophysical and electrophysiological evidence for early selection. , 1994 .

[14]  M. Posner.  Chronometric explorations of mind : the third Paul M. Fitts lectures, delivered at the University of Michigan, September 1976 , 1978 .

[15]  R. Desimone,et al.  Selective attention gates visual processing in the extrastriate cortex. , 1985, Science.

[16]  A. Treisman,et al.  Voluntary Attention Modulates fMRI Activity in Human MT–MST , 1997, Neuron.