Abstract
This study investigated whether catechol- O-methyltransferase (COMT) Val/Met polymorphism was associated with variation in event-related desynchronization/synchronization (ERD/ERS) of responses during working memory (WM). 11 Val/Val and 11 Met/Met homozygous participants underwent magnetoencephalography (MEG) while performing a WM task. In contrast to small effects behaviourally, during the delay period Val/Val individuals showed lower ERS in the gamma band (Hz 30-50) in frontal regions, increased ERS in the alpha band (Hz 8-12) in the right frontal and parietal regions and increased ERD in the beta band (Hz 14-30) in the left fronto-temporal regions as compared with Met/Met homozygous individuals. During the response period Val/Val participants showed greater beta ERD in the prefrontal and parietotemporal regions. These results demonstrate that COMT genotype has a strong impact on brain responses (oscillatory activity) during WM performance likely a consequence of compensatory activity during the delay and response periods.
Original language | English (US) |
---|---|
Pages (from-to) | 86-91 |
Number of pages | 6 |
Journal | Neuroscience Letters |
Volume | 610 |
DOIs | |
State | Published - Jan 1 2016 |
Keywords
- Dopamine
- Event-related desynchronization (ERD)
- Event-related synchronization (ERS)
- Frontal lobe
- Genetics
- Human memory
ASJC Scopus subject areas
- Neuroscience(all)