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what is the role of alpha eeg in language production?
connecting areas
is there a link between increased glutamate and incoherency of alpha eeg? CAUSED BY DOP BLK
emerging evidence
can parietal cortex assist in decreasing alpha incoherence?
yes
does parietal cortex play a causal role in incoherence of alpha eeg?
attention
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## Relationship Between Attention Range and Alpha EEG Strength
The strength of alpha EEG activity can be influenced by the range of attention, whether it's focused on a close range (e.g., one’s own body) or a long range (e.g., the surrounding environment). Research indicates that these different attentional focuses can have varying effects on alpha power. IN HEAD DAY 1203 1. Close-Range Attention:
- When attention is directed at the body or nearby stimuli, alpha power tends to decrease. This is often seen in tasks requiring detailed proprioceptive or tactile information processing.
- The decrease in alpha power may signify increased cortical excitability in regions focused on the attended body parts, facilitating sensory integration and processing.
2. Long-Range Attention:
- In contrast, when attention is directed towards more distant stimuli, alpha power generally tends to increase. This is associated with a state of relaxation and inhibition of irrelevant sensory input.
- Heightened alpha activity in this context indicates a preparatory state, allowing for better focus and cognitive processing of broader environmental information without immediate demands on the detailed processing of nearby stimuli.
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Alpha Suppression: Increased alpha activity often reflects heightened attention or a state of mental relaxation. Conversely, during tasks involving longer words, alpha suppression can occur, indicating that the brain is engaged in intensive processing. In essence, as word length increases, there may be a corresponding decrease in alpha activity as the brain works harder to decode more complex linguistic structures.
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