Caffeine's influence on critical flicker frequency thresholds

Caffeine's effect on the visual system was investigated. Twelve male and twelve female subjects (aged 18 - 25 years) were measured for Critical Flicker Frequency (CFF) thresholds at 15 levels of retinal illuminance (-1.0 to 3.0 log trolands) in each of four caffeine dosage conditions (0, 200mg,...

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Main Author: Simeroth, John P.
Other Authors: Psychology
Format: Others
Language:en
Published: Virginia Tech 2014
Subjects:
Online Access:http://hdl.handle.net/10919/41927
http://scholar.lib.vt.edu/theses/available/etd-04072009-040629/
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spelling ndltd-VTETD-oai-vtechworks.lib.vt.edu-10919-419272021-08-21T05:30:45Z Caffeine's influence on critical flicker frequency thresholds Simeroth, John P. Psychology LD5655.V855 1994.S574 Caffeine -- Physiological effect Flicker fusion -- Testing Caffeine's effect on the visual system was investigated. Twelve male and twelve female subjects (aged 18 - 25 years) were measured for Critical Flicker Frequency (CFF) thresholds at 15 levels of retinal illuminance (-1.0 to 3.0 log trolands) in each of four caffeine dosage conditions (0, 200mg, 400mg, 600mg). Variables of interest included dosage, gender, left and right eye differences, and time after ingestion. Significant results were found for dosage (p=.000), gender (p=.001), and eye differences (p=.000). Interactions were found for gender and dosage (p=.000), and gender and eye differences (p=.043). Implications of these findings are discussed in terms of caffeine's effect on the Central Nervous System (CNS) and corresponding effects on the visual system. It is concluded that ingestion of caffeine causes increased sensitivity of the visual system as displayed through lower Critical Flicker Frequency thresholds. Master of Science 2014-03-14T21:32:53Z 2014-03-14T21:32:53Z 1994 2009-04-07 2009-04-07 2009-04-07 Thesis Text etd-04072009-040629 http://hdl.handle.net/10919/41927 http://scholar.lib.vt.edu/theses/available/etd-04072009-040629/ en OCLC# 31698632 LD5655.V855_1994.S574.pdf In Copyright http://rightsstatements.org/vocab/InC/1.0/ ix, 108 leaves BTD application/pdf application/pdf Virginia Tech
collection NDLTD
language en
format Others
sources NDLTD
topic LD5655.V855 1994.S574
Caffeine -- Physiological effect
Flicker fusion -- Testing
spellingShingle LD5655.V855 1994.S574
Caffeine -- Physiological effect
Flicker fusion -- Testing
Simeroth, John P.
Caffeine's influence on critical flicker frequency thresholds
description Caffeine's effect on the visual system was investigated. Twelve male and twelve female subjects (aged 18 - 25 years) were measured for Critical Flicker Frequency (CFF) thresholds at 15 levels of retinal illuminance (-1.0 to 3.0 log trolands) in each of four caffeine dosage conditions (0, 200mg, 400mg, 600mg). Variables of interest included dosage, gender, left and right eye differences, and time after ingestion. Significant results were found for dosage (p=.000), gender (p=.001), and eye differences (p=.000). Interactions were found for gender and dosage (p=.000), and gender and eye differences (p=.043). Implications of these findings are discussed in terms of caffeine's effect on the Central Nervous System (CNS) and corresponding effects on the visual system. It is concluded that ingestion of caffeine causes increased sensitivity of the visual system as displayed through lower Critical Flicker Frequency thresholds. === Master of Science
author2 Psychology
author_facet Psychology
Simeroth, John P.
author Simeroth, John P.
author_sort Simeroth, John P.
title Caffeine's influence on critical flicker frequency thresholds
title_short Caffeine's influence on critical flicker frequency thresholds
title_full Caffeine's influence on critical flicker frequency thresholds
title_fullStr Caffeine's influence on critical flicker frequency thresholds
title_full_unstemmed Caffeine's influence on critical flicker frequency thresholds
title_sort caffeine's influence on critical flicker frequency thresholds
publisher Virginia Tech
publishDate 2014
url http://hdl.handle.net/10919/41927
http://scholar.lib.vt.edu/theses/available/etd-04072009-040629/
work_keys_str_mv AT simerothjohnp caffeinesinfluenceoncriticalflickerfrequencythresholds
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