EVIDENCE LIBRARY
Browse source-supported forensic toxicology guides in this subject area.
Oct 20, 2026
What 30 methamphetamine-history men and 36 controls showed in eye tracking, dot-probe testing and craving—and why it does not prove intoxication.
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In 102 retained adults, methamphetamine use disorder was associated with differences in happy-face recognition, trustee repayments and simulated punishment—not proven violence or individual intoxication.
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In 18 men recovering from methamphetamine dependence, higher-intensity cycling raised fNIRS signal trends—but corrected left-DLPFC p=.066 and connectivity p=.20 were not significant.
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A 29-adult crossover compares lisdexamfetamine solution with capsules using measured plasma prodrug and dexamfetamine, highlighting limits for forensic interpretation.
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A 2017 rat study found 0.1 mg/kg d-amphetamine improved low-baseline visual-signal accuracy; brain HVA, 5-HIAA and DAT results cannot predict human impairment.
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In 69 adults, 20 mg dextroamphetamine changed late-task reaction-time error (p=.003) while aggregate accuracy, gambling and card sorting remained nonsignificant.
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A 178-person AX-CPT study found lower reactive-control scores in men with methamphetamine dependence but nonsignificant proactive contrasts. What can it prove?
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A 2026 mouse methamphetamine experiment found memory-task differences and 619 gene changes in 36,376 hippocampal nuclei—not a human blood impairment test.
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In 12 rats, d-amphetamine delayed treadmill exhaustion and slowed measured core warming, while a model predicted hotter muscle. See results and limits.
Read guideOct 20, 2026
In a 20-driver crossover, oral methamphetamine changed gaze entropy while alcohol increased simulated lane weaving. Read the whole-blood and null evidence.
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