title: Beyond Neglect: Preliminary Evidence of Retrospective Time Estimation Abnormalities in Non-Neglect Stroke and Transient Ischemic Attack Patients.
abstract: Perception of the passage of time is essential for safe planning and navigation of everyday activities. Findings from the literature have demonstrated a gross underestimation of time interval in right-hemisphere damaged neglect patients, but not in non-neglect unilaterally-damaged patients, compared to controls. This study aimed to investigate retrospective estimation of the duration of a target detection task over two occasions, in 30 stroke patients (12 left-side stroke 15 right-side stroke, and 3 right-side stroke with neglect) and 10 transient ischemic attack patients, relative to 31 age-matched controls. Performances on visual short-term and working memory tasks were also examined to investigate the associations between timing abilities with residual cognitive functioning. Initial results revealed evidence of perceptual time underestimation, not just in neglect patients, but also in non-neglect unilaterally-damaged stroke patients and transient ischemic attack patients. Three months later, underestimation of time persisted only in left-side stroke and right-side stroke with neglect patients, who also demonstrated reduced short-term and working memory abilities. Findings from this study suggest a predictive role of residual cognitive impairments in determining the prognosis of perceptual timing abnormalities.
authors.affiliation: Department of Psychology and Counselling, La Trobe University, Bundoora, Victoria, Australia.
authors.forename: Essie
authors.initials: E
authors.lastname: Low
authors.affiliation: Department of Psychology and Counselling, La Trobe University, Bundoora, Victoria, Australia.
authors.forename: Sheila G
authors.initials: SG
authors.lastname: Crewther
authors.affiliation: Neuroscience Research Unit, Sunshine Hospital, Western Health, Victoria, Australia.|Department of Psychology, Sunshine Hospital, Western Health, Victoria, Australia.
authors.forename: Diana L
authors.initials: DL
authors.lastname: Perre
authors.affiliation: Department of Psychology and Counselling, La Trobe University, Bundoora, Victoria, Australia.
authors.lastname: Ben Ong
authors.affiliation: Department of Psychology and Counselling, La Trobe University, Bundoora, Victoria, Australia.
authors.forename: Robin
authors.initials: R
authors.lastname: Laycock
authors.affiliation: Neuroscience Research Unit, Sunshine Hospital, Western Health, Victoria, Australia.|Department of Neurology, Sunshine Hospital, Western Health, Victoria, Australia.
authors.forename: Hans
authors.initials: H
authors.lastname: Tu
authors.affiliation: Neuroscience Research Unit, Sunshine Hospital, Western Health, Victoria, Australia.|Department of Neurology, Sunshine Hospital, Western Health, Victoria, Australia.
authors.forename: Tissa
authors.initials: T
authors.lastname: Wijeratne
mesh_terms: D000368:Aged; D001288:Attention; D001315:Australia; D005260:Female; D007839:Functional Laterality; D006801:Humans; D002546:Ischemic Attack, Transient / Q000453:epidemiology* / Q000628:therapy; D008297:Male; D008570:Memory, Short-Term; D008875:Middle Aged; D009483:Neuropsychological Tests; D020127:Recovery of Function; D012189:Retrospective Studies; D013028:Space Perception; D020521:Stroke / Q000453:epidemiology* / Q000628:therapy; D013997:Time Factors; D016896:Treatment Outcome; D014796:Visual Perception