Increased risk for age-related impairment in visual attention associated with mild traumatic brain injury: Evidence from saccadic response times.
It was hypothesized that risk for age-related impairment in attention would be greater among those with remote history of mild TBI than individuals without history of head injury. Twenty-seven adults with remote history of mild TBI and a well-matched comparison group of 54 uninjured controls completed a computerized test of visual attention while saccadic and manual response times were recorded. Within the mild TBI group only, older age was associated with slower saccadic responses and poorer saccadic inhibition. Saccadic slowing was mitigated in situations where the timing and location of attention targets was fully predictable. Mild TBI was not associated with age-related increases in risk for neuropsychological impairment or neurobehavioral symptoms. These results provide preliminary evidence that risk for age-related impairment in visual attention may be higher among those with a history of mild TBI. Saccadic measures may provide enhanced sensitivity to this subtle form of cognitive impairment.
Department of Medical and Clinical Psychology, Uniformed Services University of the Health Sciences, Bethesda, MD, United States of America.
Jamie N
http://orcid.org/0000-0003-0793-0211
JN
Hershaw
Department of Behavioral Health, Madigan Army Medical Center, Tacoma, WA, United States of America.
David M
DM
Barry
Department of Medical and Clinical Psychology, Uniformed Services University of the Health Sciences, Bethesda, MD, United States of America.
Mark L
ML
Ettenhofer
D000328:Adult; D001288:Attention; D001924:Brain Concussion / Q000150:complications*; D060825:Cognitive Dysfunction / Q000209:etiology* / Q000503:physiopathology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009483:Neuropsychological Tests; D011930:Reaction Time; D012438:Saccades; D014786:Vision Disorders / Q000209:etiology* / Q000503:physiopathology; D055815:Young Adult