title: Orienting of attention in deafferented patients.
abstract: Visual attentional processes were compared in two deafferented patients and 11 normal subjects. Two consecutive stimuli were presented in rapid succession in one of two locations. A peripheral cue first oriented attention to one location where a response was requested. After 100 msec, a second response was required at either the same or opposite location (valid vs invalid cue). Four probabilities of valid cue occurrence were presented: 100, 80, 50 and 20%. Results showed (1) faster reaction times for the second response on cued than on uncued signals; (2) greater attentional effects with increased cue probability; (3) smaller attentional effects in patients. These findings suggest that the patients adopted a cost-minimizing strategy.
authors.affiliation: UFRAPS, E.A. D.R.E.D. 597, Université Joseph Fourier, Grenoble, France.
authors.forename: V
authors.initials: V
authors.lastname: Nougier
authors.forename: B
authors.initials: B
authors.lastname: Rossi
authors.forename: C
authors.initials: C
authors.lastname: Bard
authors.forename: M
authors.initials: M
authors.lastname: Fluery
authors.forename: N
authors.initials: N
authors.lastname: Teasdale
authors.forename: J
authors.initials: J
authors.lastname: Cole
authors.forename: Y
authors.initials: Y
authors.lastname: Lamarre
mesh_terms: D000328:Adult; D000344:Afferent Pathways / Q000503:physiopathology; D001288:Attention / Q000502:physiology*; D003463:Cues; D004292:Dominance, Cerebral / Q000502:physiology*; D005121:Extremities / Q000294:innervation*; D005260:Female; D005403:Fixation, Ocular / Q000502:physiology; D007839:Functional Laterality / Q000502:physiology; D006801:Humans; D008297:Male; D009483:Neuropsychological Tests; D009949:Orientation / Q000502:physiology*; D011115:Polyneuropathies / Q000503:physiopathology*; D011337:Probability Learning; D011434:Proprioception / Q000502:physiology; D011597:Psychomotor Performance / Q000502:physiology*; D011930:Reaction Time / Q000502:physiology*; D012438:Saccades / Q000502:physiology