title: Cognitive processing of visual images in migraine populations in between headache attacks.
abstract: OBJECTIVE
  People with migraine headache have altered interictal visual sensory-level processing in between headache attacks. Here we examined the extent to which these migraine abnormalities may extend into higher visual processing such as implicit evaluative analysis of visual images in between migraine events.
  
  
  METHODS
  Specifically, we asked two groups of participants--migraineurs (N=29) and non-migraine controls (N=29)--to view a set of unfamiliar commercial logos in the context of a target identification task as the brain electrical responses to these objects were recorded via event-related potentials (ERPs). Following this task, participants individually identified those logos that they most liked or disliked. We applied a between-groups comparison of how ERP responses to logos varied as a function of hedonic evaluation.
  
  
  RESULTS
  Our results suggest migraineurs have abnormal implicit evaluative processing of visual stimuli. Specifically, migraineurs lacked a bias for disliked logos found in control subjects, as measured via a late positive potential (LPP) ERP component.
  
  
  CONCLUSIONS
  These results suggest post-sensory consequences of migraine in between headache events, specifically abnormal cognitive evaluative processing with a lack of normal categorical hedonic evaluation.
authors: Department of Psychology, University of British Columbia, 2136 West Mall, Vancouver BC, Canada. Electronic address: marla.mick@usask.ca.
authors: Marla J S
authors: MJ
authors: Mickleborough
authors: Department of Psychology, University of British Columbia, 2136 West Mall, Vancouver BC, Canada.
authors: Christine M
authors: CM
authors: Chapman
authors: Department of Psychology, University of British Columbia, 2136 West Mall, Vancouver BC, Canada.
authors: Andreea S
authors: AS
authors: Toma
authors: Department of Psychology, University of British Columbia, 2136 West Mall, Vancouver BC, Canada.
authors: Todd C
authors: TC
authors: Handy
mesh_terms: D000328:Adult; D003071:Cognition / Q000502:physiology*; D003258:Consumer Behavior; D004569:Electroencephalography; D005071:Evoked Potentials; D005260:Female; D006801:Humans; D007600:Judgment / Q000502:physiology; D008297:Male; D008881:Migraine Disorders / Q000503:physiopathology*; D009483:Neuropsychological Tests; D010775:Photic Stimulation; D014796:Visual Perception / Q000502:physiology*
keywords: Cognitive; ERP; Headache; Hedonic; Migraine; Visual