Developmental time course of the crossed hands effect for tactile temporal order judgements
Birthe Pagel, Tobias Schicke, Brigitte Röder
Poster
Last modified: 2008-06-11
Abstract
Temporal order judgements (TOJ) for two tactile stimuli, one presented to each hand, are less precise when the hands are crossed over the midline than when the hands are uncrossed. This “crossed hands� effect has been considered as evidence for a remapping of tactile input into an external reference frame. Since late, but not early blind individuals show such remapping, it has been hypothesized that the use of an external reference frame develops during childhood. Five to ten year old children were therefore tested with the tactile TOJ task, both with uncrossed and crossed hands. Overall performance in the TOJ task > improved with age. While children older than five and half years displayed a crossed hand effect, younger children did not. Therefore the > use of an external reference frame for tactile, and possibly multisensory, localization seems to be acquired at the age around five years