EVIDENCE LIBRARY
Browse source-supported forensic toxicology guides in this subject area.
Oct 20, 2026
A 32-patient trial found n-back and running-memory improvements but no significant Stroop, go/no-go, flanker or task-switching benefit.
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Short answer: A controlled study of 30 male rats found that adult d-amphetamine disrupted visual-signal detection and short-term remembering, but adolescent methylmercury exposure did not independently produce a clear deficit on these particular measures. The strongest statistical model of the drug-challenge hit-rate data depended on the delay before a response and the administered amphetamine dose, […]
Read guideOct 20, 2026
A primary study of student reports shows stimulant and depression-prescription overlap but no blood drug assays or verified serotonin toxicity. Source-based forensic limits.
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In 14 men, modafinil and caffeine produced different two-back accuracy and P2/LPC EEG patterns after 36 hours awake, but reaction time was not significantly changed; no blood levels or driving were measured.
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A randomized 23-adult dextroamphetamine study found faster task responses, stronger frontal P3a and an easy-task theta decrease—but no significant overall P3b or blood drug measurement.
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Two independent 20-person blinded stimulant trials found no span-memory benefit; d-amphetamine elevated psychosis-like ratings. No whole-blood drug assay.
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A 2024 CRISPR/Cas12a wearable sweat-patch experiment tested prepared methamphetamine and cocaine solutions—not confirmed human impairment or blood drug levels.
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Original 68-person methamphetamine-word Stroop study: left-anterior N200 differences, null behavioral/P300/N450 tests, and why EEG cannot diagnose individual intoxication.
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A trial in 72 women found both exercise groups improved No-Go accuracy; 3-back declined overall and switching was nonsignificant. No drug assay or DUI proof.
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A 59-adult coffee trial found decaf raised reported alertness while regular coffee improved select vigilance tests. Saliva caffeine is not blood impairment.
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