Abstract
The role of coupling between prefrontal and temporo-parietal brain areas within the theta frequency range of the human electroencephalogram was explored in a working memory task. During encoding of visual information higher theta amplitudes were observed in the right compared to the left hemisphere. Retrieval of visuospatial and verbal information elicited a more bilateral activation pattern. These effects were accompanied by theta coupling between dorsolateral prefrontal and right posterior temporal electrode sites during encoding. During retrieval prefrontal and bilateral temporo-parietal brain areas were coupled. These results support the idea of working memory functions being dependent on distributed prefrontal-temporal networks.
Original language | English |
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Pages (from-to) | 123-6 |
Number of pages | 4 |
Journal | Neuroscience Letters |
Volume | 354 |
Issue number | 2 |
Publication status | Published - 9 Jan 2004 |
Keywords
- Acoustic Stimulation
- Adolescent
- Adult
- Biological Clocks
- Cerebral Cortex
- Female
- Functional Laterality
- Humans
- Male
- Memory, Short-Term
- Nerve Net
- Neural Pathways
- Parietal Lobe
- Photic Stimulation
- Prefrontal Cortex
- Psychomotor Performance
- Reaction Time
- Reference Values
- Space Perception
- Temporal Lobe
- Theta Rhythm
- Verbal Behavior