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Published byDana Golden Modified over 9 years ago
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ATTENTION DEFICIT HYPERACTIVITY DISORDER Further explained
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Comorbidities CD ODD MMR LD ADHD PDD-NOS HFA PKU CHT
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Developmental pathway depression/anxiety Childhood Adulthood ADHD impulsivity CD Core symptoms persist MPH treatment
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DIAGNOSTIC MEASURES Questionnaires (Semi) Structured Interviews DIAGNOSIS BY HEARSAY PARENT + TEACHER Third observational condition??
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Important cognitive theories
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response inhibition hypothesis Barkley (1997) Psychological Bulletin, 121, 65-94 65-94 (frontal) paper and pencil tests (frontal) paper and pencil tests delayed responding tests stop task
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Delayed response test Profile control child trial time in seconds after stimulus 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 x 2 x 3 x 4 x 5 x 6 x 7 x
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Profile child with ADHD trial time in seconds after stimulus 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 1 x 2 x 3 x 4 x 5 x 6 x 7 x
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Delay Aversion Theory Sonuga Barke et al. (1992) - Journal of Child Psychology and Psychiatry, 33, 387-398 Sonuga Barke (2002) - Behavioural Brain Research, 130, 29-36
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extra effort no extra effort optimal state non-optimal state Performance Actual state vs. required (target) state – effort allocation Theory of state regulation
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Signal rate
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extra effort no extra effort optimal state non-optimal state Performance Actual state vs. required (target) state – effort allocation Theory of state regulation Physiological costs Heart rate variability P300 amplitude fMRI
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NRT is a neural sheet draped over the lateral/anterior aspects of the thalamus NRT is the functional interface between the arousal and attention systems Receives axonal collaterals from corticothalamic, thalamocortical and reticular formation projections Nucleus Reticularis Thalami Portas et al. 1998, J. of Neuroscience, 18
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Go No-Go test
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ERPs Tracking of covert information processing Excellent temporal resolution More direct assessment of energetic mechanisms
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