Alcohol slows interhemispheric transmission, increases the flash-lag effect, and prolongs masking: Evidence for a slowing of neural processing and transmission

Khan, Sarah; Timney, Brian

doi:10.1016/j.visres.2007.03.008

Cited by 26 publications

(19 citation statements)

References 64 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Neurovision studies have reported behavioral changes related to ingestion of alcohol, for example: (i) changes in perception and detection of asymmetry of facial expressions in both men and women (Oinonen & Sterniczuk, 2007); (ii) change in luminance processing speed in photopic and scotopic levels (Khan & Timney, 2007;Puell & Barrio, 2008). Even with physiological and Psychophysics findings, it is not possible to identify an explanatory model of action of alcohol on sensory and behavioral mechanisms of vision.…”

Section: Introductionmentioning

confidence: 99%

Effects of chronic alcoholism in the sensitivity to luminance contrast in vertical sinusoidal gratings

Cruz

Andrade

Cavalcanti-Gaudino

et al. 2016

Psicol. Refl. Crít.

View full text Add to dashboard Cite

The aim of this study was to measure visual contrast sensitivity (CS) of luminance using vertical sinusoidal gratings with spatial frequencies of 0.6, 2.5, 5.0 and 20.0 cycles per degree of visual angle in chronic alcoholics in abstinence period. The participants were 20 volunteers (26-59 years of age) divided into two groups: the study group (SG) consisted of 10 volunteers with a clinical history of chronic alcoholism abstinence and the control group (CG) consisted of 10 healthy volunteers. Each group had five female and five male participants. All participants had normal or corrected visual acuity and were free of identifiable diseases. The psychophysical method of forced choice between two temporal alternatives (2AFC) was used to measure visual CS of luminance of 41.2 cd/m 2 . The results showed significant differences between groups for all spatial frequencies tested (p < 0.001). These results suggest alterations in the visual perception related to chronic alcohol consumption even after years of abstinence.

show abstract

Section: Introductionmentioning

confidence: 99%

Effects of chronic alcoholism in the sensitivity to luminance contrast in vertical sinusoidal gratings

Cruz

Andrade

Cavalcanti-Gaudino

et al. 2016

Psicol. Refl. Crít.

View full text Add to dashboard Cite

show abstract

“…Each of the tests have been widely employed as indices of a range of key cognitive processes that have previously been shown to be sensitive to the effects of alcohol intoxication, such as speed of information processing [10], [11], [12], [13], [14], [15], [16], divided attention [17], [18], [19], [20], [21], [22], [23]; problem solving [24], [25], [26], [27], [28], [29], [30], working memory [31], [32], [33], [34], [35], [36], response inhibition and cognitive flexibility [37], [38], [39], [40], [41], [42], and psychomotor functioning [18], [43], [44], [45], [46].…”

Section: Introductionmentioning

confidence: 99%

Dose-Related Effects of Alcohol on Cognitive Functioning

et al. 2012

View full text Add to dashboard Cite

We assessed the suitability of six applied tests of cognitive functioning to provide a single marker for dose-related alcohol intoxication. Numerous studies have demonstrated that alcohol has a deleterious effect on specific areas of cognitive processing but few have compared the effects of alcohol across a wide range of different cognitive processes. Adult participants (N = 56, 32 males, 24 females aged 18–45 years) were randomized to control or alcohol treatments within a mixed design experiment involving multiple-dosages at approximately one hour intervals (attained mean blood alcohol concentrations (BACs) of 0.00, 0.048, 0.082 and 0.10%), employing a battery of six psychometric tests; the Useful Field of View test (UFOV; processing speed together with directed attention); the Self-Ordered Pointing Task (SOPT; working memory); Inspection Time (IT; speed of processing independent from motor responding); the Traveling Salesperson Problem (TSP; strategic optimization); the Sustained Attention to Response Task (SART; vigilance, response inhibition and psychomotor function); and the Trail-Making Test (TMT; cognitive flexibility and psychomotor function). Results demonstrated that impairment is not uniform across different domains of cognitive processing and that both the size of the alcohol effect and the magnitude of effect change across different dose levels are quantitatively different for different cognitive processes. Only IT met the criteria for a marker for wide-spread application: reliable dose-related decline in a basic process as a function of rising BAC level and easy to use non-invasive task properties.

show abstract

“…Among those is the suggestion that the effects of alcohol intake may result from depressant effects on the inhibitory control mechanisms and the action of neurotransmitters and neuromodulators, more specifically, the dampening effect of alcohol on the GABAergic system (i.e., gamma-aminobutyric acid) (7-9). …”

Section: Introductionmentioning

confidence: 99%

Acute effect of alcohol intake on sine-wave Cartesian and polar contrast sensitivity functions

Galdino

Silva

Mendes

et al. 2014

Braz J Med Biol Res

View full text Add to dashboard Cite

The aim of this study was to assess contrast sensitivity for angular frequency stimuli as well as for sine-wave gratings in adults under the effect of acute ingestion of alcohol. We measured the contrast sensitivity function (CSF) for gratings of 0.25, 1.25, 2.5, 4, 10, and 20 cycles per degree of visual angle (cpd) as well as for angular frequency stimuli of 1, 2, 4, 24, 48, and 96 cycles/360°. Twenty adults free of ocular diseases, with normal or corrected-to-normal visual acuity, and no history of alcoholism were enrolled in two experimental groups: 1) no alcohol intake (control group) and 2) alcohol ingestion (experimental group). The average concentration of alcohol in the experimental group was set to about 0.08%. We used a paradigm involving a forced-choice method. Maximum sensitivity to contrast for sine-wave gratings in the two groups occurred at 4 cpd sine-wave gratings and at 24 and 48 cycles/360° for angular frequency stimuli. Significant changes in contrast sensitivity were observed after alcohol intake compared with the control condition at spatial frequency of 4 cpd and 1, 24, and 48 cycles/360° for angular frequency stimuli. Alcohol intake seems to affect the processing of sine-wave gratings at maximum sensitivity and at the low and high frequency ends for angular frequency stimuli, both under photopic luminance conditions.

show abstract

Alcohol slows interhemispheric transmission, increases the flash-lag effect, and prolongs masking: Evidence for a slowing of neural processing and transmission

Cited by 26 publications

References 64 publications

Effects of chronic alcoholism in the sensitivity to luminance contrast in vertical sinusoidal gratings

Effects of chronic alcoholism in the sensitivity to luminance contrast in vertical sinusoidal gratings

Dose-Related Effects of Alcohol on Cognitive Functioning

Acute effect of alcohol intake on sine-wave Cartesian and polar contrast sensitivity functions

Contact Info

Product

Resources

About