Method and device for detection and assessment of marijuana impairment

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United States of America Patent

PATENT NO 12114224
APP PUB NO 20230263386A1
SERIAL NO

18142209

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Abstract

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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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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Valenti, Denise A Quincy, US 7 4

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