title: Cortical potentials during gap and non-gap paradigms using manual responses in humans.
abstract: An experiment was conducted on naive human subjects to measure the time benefits on finger reaction times produced by the offset of a central fixation point 200 ms before the appearance of a target stimulus in the periphery. Subjects produced a shift advancement of manual reaction times. Simultaneously, the event-related potentials were recorded. The gap paradigm induced offset visual evoked potentials and a frontal negativity, it also induced a higher P300 than the non-gap condition. The results suggest that the gap promotes the speeding of the response by a cortical priming.
authors.affiliation: Laboratorio de Psicobiología, Facultad de Psicología, Seville, Spain.
authors.forename: C
authors.initials: C
authors.lastname: Gómez
authors.forename: M
authors.initials: M
authors.lastname: Atienza
authors.forename: D
authors.initials: D
authors.lastname: López-Mendoza
authors.forename: G J
authors.initials: GJ
authors.lastname: Gómez
authors.forename: M
authors.initials: M
authors.lastname: Vázquez
mesh_terms: D000328:Adult; D002540:Cerebral Cortex / Q000502:physiology*; D004569:Electroencephalography; D004585:Electrooculography; D005071:Evoked Potentials / Q000502:physiology; D005133:Eye Movements / Q000502:physiology; D006225:Hand / Q000502:physiology; D006801:Humans; D009068:Movement / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology; D012438:Saccades / Q000502:physiology