1 / 15

ATTENTION DEFICIT HYPERACTIVITY DISORDER

ATTENTION DEFICIT HYPERACTIVITY DISORDER. Further explained. Comorbidities. CD ODD MMR LD ADHD PDD-NOS HFA PKU CHT. Developmental pathway.

Télécharger la présentation

ATTENTION DEFICIT HYPERACTIVITY DISORDER

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. ATTENTION DEFICIT HYPERACTIVITY DISORDER Further explained

  2. Comorbidities • CD • ODD • MMR LD ADHD PDD-NOS HFA • PKU • CHT

  3. Developmental pathway • depression/anxiety • Childhood Adulthood ADHD • impulsivity CD • Core symptoms persist • MPH treatment

  4. DIAGNOSTIC MEASURES • Questionnaires • (Semi) Structured Interviews • DIAGNOSIS BY HEARSAY • PARENT + TEACHER • Third observational condition??

  5. Important cognitive theories

  6. response inhibition hypothesis Barkley (1997) Psychological Bulletin, 121, 65-94 (frontal) paper and pencil tests • delayed responding tests • stop task

  7. Delayed response testProfile control child • trial time in seconds after stimulus 1 2 3 4 5 6 7 8 • 1 x • 2 x • 3 x • 4 x • 5 x • 6 x • 7 x

  8. Profile child with ADHD • trial time in seconds after stimulus 1 2 3 4 5 6 7 8 • 1 x • 2 x • 3 x • 4 x • 5 x • 6 x • 7 x

  9. 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

  10. Performance non-optimal state optimal state Theory of state regulation • Actual state vs. required (target) state – effort allocation extra effort no extra effort

  11. Signal rate

  12. Performance non-optimal state optimal state Theory of state regulation • Actual state vs. required (target) state – effort allocation extra effort no extra effort Physiological costs Heart rate variability P300 amplitude fMRI

  13. Nucleus Reticularis Thalami • 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 Portas et al. 1998, J. of Neuroscience, 18

  14. Go No-Go test

  15. ERPs • Tracking of covert information processing • Excellent temporal resolution • More direct assessment of energetic mechanisms

More Related