Two-flash thresholds as a function of comparison stimulus duration.

Lewis, Mark F.; Mertens, Henry W.; Civil Aeromedical Institute

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Two-flash thresholds as a function of comparison stimulus duration.

1970-09-01
By Lewis, Mark F. ; Mertens, Henry W.

[PDF-278.69 KB]

English

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Details:

Creators:

Lewis, Mark F. ; Mertens, Henry W.

Lewis, Mark F. ; Mertens, Henry W. Less -
Corporate Creators:

Civil Aeromedical Institute
Corporate Contributors:

United States. Office of Aviation Medicine
Subject/TRT Terms:

[+]

Aids To Navigation Aircraft Aircraft Accidents Aircraft Collisions Airplanes--Collision Avoidance Systems Air Transportation Crashes Beacons Brightness Brightness Perception Crash Avoidance Systems Luminance Luminescence Luminous Intensity Navigation (Aeronautics) Navigation--Safety Measures Navigational Warnings, Special Navigation Devices Navigation Lights Peripheral Vision Signal Lights Signals Stimulus Intensity Strobes Stroboscopes Threshold (Perception) Visual Perception Warning Signals
Publication/ Report Number:

AM 70-15 ; DOT/FAA/AM-70/15

AM 70-15 ; DOT/FAA/AM-70/15 Less -
Resource Type:

Tech Report
Geographical Coverage:

United States
Edition:

OAM report.
Corporate Publisher:

Civil Aerospace Medical Institute
Abstract:

The proposal that two-flash thresholds may be used as direct measures of the critical duration (tc) of Bloch's law was tested. Two-flash threshold was found to be an increasing function of comparison stimulus duration for durations of 3 to 22 msec. indicating that two-flash threshold does not measure tc. Increasing luminance in the range of 1.0 to 3.0 log mL. enhanced the effect. Application of these data to specifications for strobe lights used as anticollision devices is discussed.
Format:

PDF
Collection(s):

FAA Civil Aerospace Medical Institute US Transportation Collection
Main Document Checksum:

[+]

urn:sha256:0783a8992b822626428d533dcacd0b4b4e24bd9c24857adf87f321ad2f8b1ba2
Download URL:

https://rosap.ntl.bts.gov/view/dot/20955/dot_20955_DS1.pdf
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Two-flash thresholds as a function of comparison stimulus duration.

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