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Distractibility in AD/HD predominantly inattentive and combined subtypes: the P3a ERP component, heart rate and performance
- Source :
- Journal of integrative neuroscience. 5(1)
- Publication Year :
- 2005
-
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.
- 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
Subjects
Details
- ISSN :
- 02196352
- Volume :
- 5
- Issue :
- 1
- Database :
- OpenAIRE
- Journal :
- Journal of integrative neuroscience
- Accession number :
- edsair.doi.dedup.....e56bdeca8dd88851722b14e83cb45dd4