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Published on: June 12, 2020
Contraction of time in attention-deficit hyperactivity disorder.
David L Gilden1, Laura R Marusich
1Department of Psychology, The University of Texas, Austin, TX 78712, USA. gilden@psy.utexas.edu
Adults with attention-deficit hyperactivity disorder (ADHD) exhibit a faster rhythm cut-off, indicating a shortened temporal span in their perception. This suggests dopamine dysfunction impacts cognitive timing in ADHD.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Psychiatry
Background:
- Attention-deficit hyperactivity disorder (ADHD) is linked to dopamine system anomalies.
- Dopamine dysfunction in ADHD may manifest as shortened time scales in learning.
- This study explores if temporal span in working memory is also shortened in ADHD.
Purpose of the Study:
- To investigate the temporal span of working memory in adults with ADHD.
- To test the hypothesis that dopamine dysfunction shortens temporal perception in ADHD.
Main Methods:
- Assessed the minimum tempo for sustained rhythmic feeling in adults with ADHD and a control group.
- Focused on the implicit memory system of rhythmic movement.
Main Results:
- Individuals with ADHD demonstrated a significantly faster rhythm cut-off compared to controls.
- This finding supports the conjecture of a generally shortened temporal span in ADHD.
Conclusions:
- Impaired dopamine dynamics in ADHD have systemic effects on cognitive function.
- ADHD may recalibrate the internal clock governing subjective temporal experience.
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