title: The effects of motivational reward on the pathological attentional blink following right hemisphere stroke.
abstract: Recent work has shown that attentional deficits following stroke can be modulated by motivational stimulation, particularly anticipated monetary reward. Here we examined the effects of anticipated reward on the pathological attentional blink (AB), an index of temporal selective attention, which is prolonged in patients with right hemisphere damage and a history of left neglect. We specifically compared the effects of reward versus feedback-without-reward on the AB in 17 patients. We found that the patients all manifested impaired performance compared to healthy controls and that reward modulated the pathological blink in the patient group, but only in the second experimental session. When the performance of patients whose neglect had recovered was compared with that of patients who had ongoing or persistent neglect, reward appeared to only influence the AB in the former. These results have implications for our understanding of motivation-attention interactions following right hemisphere stroke, and how they may impact upon recovery from spatial neglect.
authors.affiliation: Division of Brain Sciences, Imperial College London, Fulham Palace Road, London W6 8RF, UK.
authors.forename: Korina
authors.initials: K
authors.lastname: Li
authors.affiliation: Department of Psychology, Institute of Psychiatry, Psychology and Neuroscience, Guy's Campus, Addison House, London SE1 1UL, UK.
authors.forename: Charlotte
authors.initials: C
authors.lastname: Russell
authors.affiliation: Division of Brain Sciences, Imperial College London, Fulham Palace Road, London W6 8RF, UK.
authors.forename: Nikita
authors.initials: N
authors.lastname: Balaji
authors.affiliation: Division of Brain Sciences, Imperial College London, Fulham Palace Road, London W6 8RF, UK.
authors.forename: Youssuf
authors.initials: Y
authors.lastname: Saleh
authors.affiliation: Basque Center on Cognition, Brain and Language, San Sebastian, Spain; Ikerbasque, Basque Foundation for Science, Bilbao, Spain.
authors.forename: David
authors.initials: D
authors.lastname: Soto
authors.affiliation: Division of Brain Sciences, Imperial College London, Fulham Palace Road, London W6 8RF, UK. Electronic address: p.malhotra@imperial.ac.uk.
authors.forename: Paresh A
authors.initials: PA
authors.lastname: Malhotra
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D059031:Anticipation, Psychological; D001288:Attention; D054518:Attentional Blink; D001921:Brain / Q000000981:diagnostic imaging; D030141:Feedback, Psychological; D005260:Female; D007839:Functional Laterality; D006801:Humans; D008297:Male; D008875:Middle Aged; D009042:Motivation; D009483:Neuropsychological Tests; D010468:Perceptual Disorders / Q000000981:diagnostic imaging / Q000209:etiology / Q000523:psychology*; D012201:Reward; D020521:Stroke / Q000150:complications / Q000000981:diagnostic imaging / Q000523:psychology*; D014796:Visual Perception
keywords: Attention; Attentional Blink; Motivation; Neglect; Reward; Stroke