Psychophysical measure of visual luminance contrast during a daily rhythm

Andrade, Michael Jackson Oliveira de; Rezende, Maria Thalita Cardoso; Figueiredo, Bruna Gabrielli Damascena de; Farias, Cleiciane Alves; Santos, Natanael Antônio dos

doi:10.1080/07420528.2019.1653904

Cited by 2 publications

(2 citation statements)

References 31 publications

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“…As this trial is a single group model, with an anticipated 20% attrition rate, our main intention is to enroll 50 individuals for each study (Study 1, N = 50; Study 2, N = 50). Although our sample size is larger than that of previous studies using these tests ( Andrade et al, 2019 ; Fernandes et al, 2019a , b ), it is important to provide an estimation that covers our outcomes (e.g., BMIs and cotinine).…”

Section: Methods and Analysismentioning

confidence: 99%

Effects of Nicotine Gum Administration on Vision (ENIGMA-Vis): Study Protocol of a Double-Blind, Randomized, and Controlled Clinical Trial

Fernandes

Hovis

Almeida

et al. 2020

Front. Hum. Neurosci.

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Studies reported that tobacco addiction was related to visual impairments, but one unresolved issue is whether the impairments are related to the many compounds existing in the cigarettes or to the effects of nicotine. On the other hand, nicotine gum can be used as replacement therapy or as a neuroprotective agent for some diseases. The main purpose of this controlled trial is to investigate the effects of nicotine gum on vision. The ENIGMA-Vis trial aims to compare two dosages of nicotine gum (2 and 4 mg) and a placebo gum in a randomized, double-blind, placebo-controlled trial of 100 participants to be allocated into a single group assignment of repeated measures (two studies; N = 50 for each one). Eligibility criteria are healthy non-smokers not diagnosed with substance abuse and without an acute or chronic medical condition. Intervention will last three sessions for each participant with a window frame of 1 week per session. Study outcomes are (1) short-term effects of nicotine gum on contrast sensitivity; (2) short-term effects of nicotine gum on chromatic contrast discrimination; and (3) whether demographics, body mass index, or serum cotinine predicts response of visual processing. This study addresses an important gap in the effects of nicotine on vision. One of the main takeaways of this study is to understand the effects of nicotine on contrast sensitivity and chromatic contrast discrimination. This information will provide a further understanding of how nicotine interacts with early visual processes and help determine how the different components present during smoking can affect vision.

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Section: Methods and Analysismentioning

confidence: 99%

Effects of Nicotine Gum Administration on Vision (ENIGMA-Vis): Study Protocol of a Double-Blind, Randomized, and Controlled Clinical Trial

Fernandes

Hovis

Almeida

et al. 2020

Front. Hum. Neurosci.

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“…However, a large part of the adult population is classified with an intermediate chronotype 4 . There is evidence to suggest that CT is influenced by individual factors, such as age and sex [5][6][7] , environmental factors, including exposure to light 8,9 , and also to cognitive skills and personality traits [10][11][12][13][14][15] .…”

Section: Introductionmentioning

confidence: 99%

Personality and affections in university students: implications of circadian typology

Santos¹,

Moreira²,

Araujo³

et al. 2022

Sleep Sci

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The chronotype refers to the individual differences related to the preference to perform activities or to rest during the wake or in the preferences for a certain period of the day. In this study, we evaluated how the chronotype can be considered a variable of interest for individual personality differences. Still, it was verified how the positive and negative effects and self-esteem interact with the quality of sleep and the circadian personality according to the Big Five personality factors. This study included 150 volunteers of both sexes (41 men and 109 women) aged between 16 and 44 years old (M=22.08; SD=3.8 in age). The analysis of variance showed significant differences for Horne and Ostberg [F(2.148) = 401.69; η2=0.85] usual sleep efficiency [F(2.148) = 4.83; η2=0.6] and the sleep quality index [F(2.148) = 3.25; η2=13.0]. Morning subjects had better behavioral indexes of sleep quality when compared to evening subjects. Regarding positive affects [F(2.147) = 3.54; η2=0.53], morning subjects had a higher score than afternoon subjects (p=0.34) and consequently had higher scores in kindness traits [F(2,148) = 6.81; η2=0.95] and emotional stability [F(2.188) = 6.58; η2=0.91]. The chronotype is associated with personality factors and sleep behavior (efficiency and sleep latency as basic requirements for good quality of sleep) and variables such as sleep efficiency and quality of sleep can be moderators of this behavior.

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Psychophysical measure of visual luminance contrast during a daily rhythm

Cited by 2 publications

References 31 publications

Effects of Nicotine Gum Administration on Vision (ENIGMA-Vis): Study Protocol of a Double-Blind, Randomized, and Controlled Clinical Trial

Effects of Nicotine Gum Administration on Vision (ENIGMA-Vis): Study Protocol of a Double-Blind, Randomized, and Controlled Clinical Trial

Personality and affections in university students: implications of circadian typology

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