METHOD AND DEVICE FOR DETECTION AND ASSESSMENT OF MARIJUANA IMPAIRMENT
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United States of America
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Issued Date -
Jan 16, 2025
app pub date -
Oct 1, 2024
filing date -
Oct 1, 2024
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Abstract
A method of identifying individuals impaired by a psychoactive substance such as cannabis. The method includes presenting monocularly to a subject being tested; to each eye separately, a sinusoidal grating pattern of fixed spatial frequency with achromatic contrast or color contrast between grating stripes being temporally alternately modulated at a temporal frequency that ranges between 10 Hz and 60 Hz with a pattern of the contrast being such that the subject being tested can see a frequency doubling in the grating pattern.
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