Component
Human working memory during experimental cold-water exposure
Context-specific entity; species, compartment and exposure are stated on each 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
In 19 volunteers, tyrosine-containing food bars improved selected working-memory measures during repeated cold-water immersion relative to cold/placebo.
Experimental context and source evidence
- evidence_access
- Primary abstract
- experimental_model
- Double-blind within-subject design; two 150 mg/kg doses, total 300 mg/kg; two 90-minute approximately 10-degree-C immersions.
- limitations
- This was a high experimental dose, not routine dietary exposure; dopamine mediation was not directly measured.
- nutrient_topic
- L-Tyrosine collection; species, compartment, exposure, co-substrates and manipulation remain explicit. · L-Tyrosine
- plain_language
- A benefit was observed under a specific severe stressor.
- primary_references
- Tyrosine supplementation mitigates working memory decrements during cold exposure. · 2007 · https://pubmed.ncbi.nlm.nih.gov/17585971/ · DOI 10.1016/j.physbeh.2007.05.003
L-Tyrosine: catecholamines, thyroid chemistry, pigment, metabolism and cross-nutrient mechanisms (2026-09-19) · lines 396–402
AI-assisted research curation; primary references, access levels and experimental limitations individually identified. Not publisher full text. · supports · Double-blind within-subject design; two 150 mg/kg doses, total 300 mg/kg; two 90-minute approximately 10-degree-C immersions. · source_derived_draft · unverified_draft
## l-tyrosine-cold-performance A benefit was observed under a specific severe stressor. In 19 volunteers, tyrosine-containing food bars improved selected working-memory measures during repeated cold-water immersion relative to cold/placebo. Model: Double-blind within-subject design; two 150 mg/kg doses, total 300 mg/kg; two 90-minute approximately 10-degree-C immersions. Limitations: This was a high experimental dose, not routine dietary exposure; dopamine mediation was not directly measured. Evidence access: Primary abstract Tyrosine supplementation mitigates working memory decrements during cold exposure. · 2007 · https://pubmed.ncbi.nlm.nih.gov/17585971/ · DOI 10.1016/j.physbeh.2007.05.003
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.