Interhemispheric transfer of spatial and semantic information: electrophysiological evidence. Journal Article uri icon

Overview

abstract

  • The goal of this study was to cast light on the existence of functional callosal channels for the interhemispheric transfer (IHT) of spatial and semantic information. To do so, we recorded event-related potentials in healthy humans while performing a primed odd-even discrimination task. Targets were visually presented numbers preceded by single-letter primes signaling the probable presentation of an odd or an even number. Primes and targets could appear either in the same or in different visual fields, thus requiring an IHT in the latter case. The P1 and N2 components were influenced by IHT of spatial information only, whereas the later N400 was influenced by IHT of both spatial and semantic information. This was not the case for the P3b, which was modulated by semantic validity only. These results provide novel evidence of the existence of a temporally separated interhemispheric exchange of spatial and semantic information.

publication date

  • April 1, 2013

Full Author List

  • Dal Molin A; Marzi CA; Banich MT; Girelli M

Other Profiles

Additional Document Info

start page

  • 377

end page

  • 387

volume

  • 50

issue

  • 4