Component
Task-related tonic alpha-band EEG power
Task-related tonic alpha-band EEG power. Species, exposure and limitations are retained in each linked claim.
1 recorded relationships. Experimental role, claim status and evidence remain attached to each record.
How nutrients influence it
Every nutrient with a recorded effect on this component, credited to the nutrient that acted rather than the chapter that recorded it. Open a nutrient to see the findings and the conditions they were measured under.
Other things that act on it
Enzymes, hormones, genes, and other components with a recorded effect. These are not nutrients, so they do not count toward the arrows above. Each finding names the chapter that recorded it.
How nutrients reach it in more than one step
Chains of two or more recorded steps that end here, grouped by the nutrient they start from. Each step is a separate finding, so a chain is a route a mechanism could take, not proof that it does.
Tracing routes…
What it does
Every recorded relationship this component is part of, grouped by its role. Plain wording comes first; the technical statement follows.
What acts on it
Theanine reduced background tonic alpha activity during the attention experiment.
Experimental context and source evidence
- evidence_span
- {"source_cache": "artifacts/theanine-research/18841456.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "ce2d441698792fe97dc093de2cd5758a3ccf088d3333151f302f06aea776f911", "start_char": 0, "end_char": 2224, "text_sha256": "ce2d441698792fe97dc093de2cd5758a3ccf088d3333151f302f06aea776f911"}
- experimental_model
- Counterbalanced visuospatial attention and EEG experiment
- exposure
- 250 mg theanine
- limitations
- Small task-based EEG experiment. Alpha direction varies with task and recording context; it is not a universal marker of relaxation.
- nutrient_topic
- L-Theanine research collection; topical membership is not evidence of a direct dietary effect. · L-Theanine
- organism
- 13 healthy humans
- plain_language
- Theanine does not invariably increase every measure of alpha waves.
- primary_references
- [theanine-p18841456] The effects of L-theanine on alpha-band oscillatory brain activity during a visuo-spatial attention task. (2009). https://pubmed.ncbi.nlm.nih.gov/18841456/ DOI: 10.1007/s10548-008-0068-z
- tissue_or_cell_type
- Tonic and cue-related alpha activity
L-Theanine: metabolism, neural signaling, nutrient connections and human outcomes (2026-09-17) · lines 1030–1041
AI-assisted literature curation; primary study URLs and scope retained in the document and extraction. Not publisher full text. · supports · Counterbalanced visuospatial attention and EEG experiment · source_derived_draft · unverified_draft
### theanine-tonic-alpha Theanine reduced background tonic alpha activity during the attention experiment. Condition category: normal nutrient_topic: L-Theanine research collection; topical membership is not evidence of a direct dietary effect. plain_language: Theanine does not invariably increase every measure of alpha waves. organism: 13 healthy humans tissue_or_cell_type: Tonic and cue-related alpha activity experimental_model: Counterbalanced visuospatial attention and EEG experiment limitations: Small task-based EEG experiment. Alpha direction varies with task and recording context; it is not a universal marker of relaxation. exposure: 250 mg theanine evidence_span: {"source_cache": "artifacts/theanine-research/18841456.abstract.txt", "locator": "Primary indexed abstract; zero-based, end-exclusive Unicode character offsets", "file_sha256": "ce2d441698792fe97dc093de2cd5758a3ccf088d3333151f302f06aea776f911", "start_char": 0, "end_char": 2224, "text_sha256": "ce2d441698792fe97dc093de2cd5758a3ccf088d3333151f302f06aea776f911"} [theanine-p18841456] The effects of L-theanine on alpha-band oscillatory brain activity during a visuo-spatial attention task. (2009). https://pubmed.ncbi.nlm.nih.gov/18841456/ DOI: 10.1007/s10548-008-0068-z
Complete structured claim and evidence
The events it takes part in
A mechanism often involves more than two components. These are the full events, with every participant and its role.
Situations it appears in
Low-supply and faulty-machinery situations recorded in the chapters where this component plays a part.
In the sources
Preserved passages that mention this component, quoted exactly. Open one to read it in context.
Open hypotheses
Proposed ideas that involve this component. They are labeled as hypotheses and do not change any recorded statement.
This is a research prototype built from draft material. It is not medical advice, and its statements still await verification against the original studies.