Time and neglect: abnormal temporal dynamics in unilateral spatial neglect.
Temporality enters our immediate experience as passage and becoming: the role time plays in the construction of a world of enduring entities tends to go unnoticed. This paper examines the relation between time and ontology in the context of unilateral neglect, a neuropsychological syndrome in which patients fail to perceive or respond to stimuli in the contralateral hemifield, behaving as if that half of space does not exist. Traditional models characterize neglect exclusively in spatial terms. Based on recent investigations suggesting abnormal temporal dynamics, here we highlight the impact of time factors on the presentation of the disorder. Neglect patients do not simply miss the presence of stimuli on the left: they also ignore the past as well as the future of neglected stimuli. We claim that, if this occurs, it is because time, and not only space, is impaired.
Becchio
Cristina
C
Centre for Cognitive Science, Department of Psychology, Università di Torino, via Po 14, 10123 Torino, Italy. becchio@psych.unito.it
Bertone
Cesare
C
D001288:Attention; D007839:Functional Laterality / Q000502:physiology*; D006801:Humans; D009483:Neuropsychological Tests; D010468:Perceptual Disorders / Q000503:physiopathology*; D010775:Photic Stimulation / Q000379:methods; D011930:Reaction Time / Q000502:physiology; D013997:Time Factors; D014796:Visual Perception / Q000502:physiology*