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Start Over Descriptor "peripheral arousal" Journal journal of integrative neuroscience
2 results on '"peripheral arousal"'

1. DISTRACTIBILITY IN AD/HD PREDOMINANTLY INATTENTIVE AND COMBINED SUBTYPES:: THE P3a ERP COMPONENT, HEART RATE AND PERFORMANCE.

Author

KEAGE, HANNAH A. D., CLARK, C. RICHARD, HERMENS, DANIEL F., KOHN, MICHAEL R., CLARKE, SIMON, WILLIAMS, LEANNE M., CREWTHER, DAVID, Lamb, Chris, and GORDON, EVIAN

Subjects
*ATTENTION-deficit hyperactivity disorder, *SHORT-term memory, *ADOLESCENT psychology, *ADULT-child relationships, *THOUGHT & thinking, *RECOGNITION (Psychology), *BRAIN
Abstract

The current study aimed to investigate whether children and adolescents diagnosed with Attention Deficit/Hyperactivity Disorder Predominantly Inattentive (AD/HD-in; Child n = 24, Adolescent n = 33) and Combined (AD/HD-com; Child n = 30, Adolescent n = 42) subtypes were more distractible than controls (Child n = 54; Adolescents n = 75), by assessing event-related potential (ERP), performance and peripheral arousal measures. All AD/HD groups displayed smaller amplitudes and/or shorter latencies of the P3a ERP component — thought to reflect involuntary attention switching — following task-deviant novel stimuli (checkerboard patterns) embedded in a Working Memory (WM) task. The P3a results suggested that both AD/HD-in and AD/HD-com subtypes ineffectively evaluate deviant stimuli and are hence more "distractible". These abnormalities were most pronounced over the central areas. AD/HD groups did not display any abnormalities in averaged heart rate over the WM task, a measure of peripheral arousal. They did display abnormalities in performance measures from the task, but these were unrelated to P3a abnormalities. AD/HD groups also displayed a number of deficits on Switching of Attention and Verbal Memory tasks, however, the pattern of abnormality mostly reflected general cognitive deficits rather than resulting from distraction. [ABSTRACT FROM AUTHOR]

Published
2006
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2. Distractibility in AD/HD predominantly inattentive and combined subtypes: the P3a ERP component, heart rate and performance

Author

Evian Gordon, Leanne M. Williams, C.R. Clark, Daniel F. Hermens, Chris Lamb, David P. Crewther, Hannah Keage, Simon Clarke, Michael Kohn, Keage, Hannah, Clark, Christopher, Hermens, D, Kohn, Michael, Clarke, Simon, Williams, Leanne, Crewther, D, Lamb, Christopher, and Gordon, Evian

Subjects
Male, medicine.medical_specialty, Adolescent, distractibility, Audiology, Neuropsychological Tests, behavioral disciplines and activities, Arousal, Developmental psychology, P3a, Heart Rate, Distraction, Heart rate, medicine, Reaction Time, Humans, Attention, Child, AD/HD, Analysis of Variance, Working memory, Brain Neoplasms, General Neuroscience, Cognition, Electroencephalography, peripheral arousal, General Medicine, Verbal Learning, Memory, Short-Term, Attention Deficit Disorder with Hyperactivity, Other Psychology and Cognitive Sciences, Evoked Potentials, Auditory, Female, Verbal memory, Abnormality, Psychology, ERP, performance, psychological phenomena and processes, Psychomotor Performance
Abstract

The current study aimed to investigate whether children and adolescents diagnosed with Attention Deficit/Hyperactivity Disorder Predominantly Inattentive (AD/HD-in; Child n = 24, Adolescent n = 33) and Combined (AD/HD-com; Child n = 30, Adolescent n = 42) subtypes were more distractible than controls (Child n = 54; Adolescents n = 75), by assessing event-related potential (ERP), performance and peripheral arousal measures. All AD/HD groups displayed smaller amplitudes and/or shorter latencies of the P3a ERP component — thought to reflect involuntary attention switching — following task-deviant novel stimuli (checkerboard patterns) embedded in a Working Memory (WM) task. The P3a results suggested that both AD/HD-in and AD/HD-com subtypes ineffectively evaluate deviant stimuli and are hence more "distractible". These abnormalities were most pronounced over the central areas. AD/HD groups did not display any abnormalities in averaged heart rate over the WM task, a measure of peripheral arousal. They did display abnormalities in performance measures from the task, but these were unrelated to P3a abnormalities. AD/HD groups also displayed a number of deficits on Switching of Attention and Verbal Memory tasks, however, the pattern of abnormality mostly reflected general cognitive deficits rather than resulting from distraction.

Published
2005

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