Cookies on this website
We use cookies to ensure that we give you the best experience on our website. If you click 'Continue' we'll assume that you are happy to receive all cookies and you won't see this message again. Click 'Find out more' for information on how to change your cookie settings.

It has often been shown that people experience difficulty restricting their tactile attention to one hand when both hands are touched simultaneously, especially if the hands are in close spatial proximity. Taken in conjunction with a growing body of evidence that the sensations arising from stimulation of the skin are referred to locations in external space rather than their positions on the body, these tactile attention findings provide evidence for the spatial distribution of attention in touch. However, the effect of spatial distance between the arms on the distribution of attention has been shown in only a limited number of studies and in single testing sessions. In a set of experiments we examined the stability of the arm separation effect by measuring performance over two sessions and with varying visual information about arm location. Tactile selection was more efficient when the stimulated hands were placed far apart compared with when they were adjacent but the effect was short lived (session 1 only) and only occurred when participants were tested with their eyes open. These findings suggest that somatosensory attention is a flexible, dynamic process, based on coordinates that can vary over time.

Original publication

DOI

10.1016/j.brainres.2010.06.047

Type

Journal article

Journal

Brain Res

Publication Date

10/09/2010

Volume

1351

Pages

185 - 197

Keywords

Adolescent, Adult, Attention, Female, Humans, Male, Photic Stimulation, Physical Stimulation, Reaction Time, Somatosensory Cortex, Space Perception, Touch, Young Adult