Temporal vision is related to cognitive function in preadolescent children

Saint, Sarah E.; Hammond, Billy R.; Khan, Naiman A.; Hillman, Charles H.; Renzi-Hammond, Lisa

doi:10.1080/21622965.2019.1699096

Cited by 2 publications

(3 citation statements)

References 39 publications

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“…The differences in CFF performance (as an index of processing speed) in children might be a predictor of future cognitive functioning. Visual processing speed, however, is not the only predictor of cognitive abilities in the future [1]. Saint and colleagues examined 54 children with CFF and the Woodcock-Johnson III Tests of Cognitive Abilities and observed that psychomotor coordination became better with age (younger children had longer reaction time latency) [1].…”

Section: Use Of the Critical Flicker Fusion Test In Neuropsychologymentioning

confidence: 99%

“…Critical flicker fusion frequency (CFF or CFFF) is defined as the frequency at which flickering light can be perceived as continuous and it is used to assess the processing of temporal vision. The upper level of one's abilities in visual processing is described as the critical flicker fusion threshold (or threshold for flicker fusion, TFF), which represents the maximum speed of flickering light that can be perceived by the visual system [1,2]. Because of its efficiency in detecting rapid changes, it is used as an index of cerebral nervous system (CNS) function that is described as alertness and cortical arousal in humans [3,4].…”

Section: Introductionmentioning

confidence: 99%

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Critical Flicker Fusion Frequency: A Narrative Review

et al. 2021

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This review presents the current knowledge of the usage of critical flicker fusion frequency (CFF) in human and animal model studies. CFF has a wide application in different fields, especially as an indicator of cortical arousal and visual processing. In medicine, CFF may be helpful for diagnostic purposes, for example in epilepsy or minimal hepatic encephalopathy. Given the environmental studies and a limited number of other methods, it is applicable in diving and hyperbaric medicine. Current research also shows the relationship between CFF and other electrophysiological methods, such as electroencephalography. The human eye can detect flicker at 50–90 Hz but reports are showing the possibility to distinguish between steady and modulated light up to 500 Hz. Future research with the use of CFF is needed to better understand its utility and application.

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Section: Use Of the Critical Flicker Fusion Test In Neuropsychologymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Critical Flicker Fusion Frequency: A Narrative Review

et al. 2021

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“…Since the retina keeps responding to flicker past the fusion point, it is generally regarded as being determined as post-receptoral. Data on children have shown it correlates with high-order cognitive processes [ 44 ]. CFF frequency was measured with a standard CFF apparatus developed by Anand Agencies (Pune, India).…”

Section: Methodsmentioning

confidence: 99%

Lutein and Zeaxanthin Supplementation Improves Dynamic Visual and Cognitive Performance in Children: A Randomized, Double-Blind, Parallel, Placebo-Controlled Study

Parekh,

Hammond,

Chandradhara

2024

Adv Ther

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Introduction Supplementation with dietary neuro-pigments lutein (L) and zeaxanthin (Z) has been shown to improve many aspects of visual and cognitive function in adults. In this study, we tested whether a similar intervention could improve such outcomes in preadolescent children. Methods Sixty children (age range 5–12 years) were randomized in a 2:1 ratio in this double-blind, placebo-controlled clinical trial. Subjects were supplemented with gummies containing either a combination of 10 mg lutein and 2 mg zeaxanthin (LZ) or placebo for 180 days. Macular pigment optical density (MPOD) was the primary endpoint. The secondary endpoints included serum levels of L and Z, and brain-derived neurotrophic factor (BDNF), critical flicker fusion (CFF), eye strain and fatigue using visual analogue scales (VAS), Children’s Sleep Habits Questionnaire-Abbreviated (CSHQ-A), and Creyos Health cognitive domains like attention, focus/concentration, episodic memory and learning, visuospatial working memory, and visuospatial processing speed. Safety was assessed throughout the study on the basis of physical examination, vital signs, clinical laboratory tests, and monitoring of adverse events. Results The LZ group showed significant increases in MPOD at all visits post-supplementation, with significant increases as early as day 42 compared to placebo. The LZ group showed significant increases in serum lutein levels, reduced eye strain and fatigue, and improved cognitive performance (focus, episodic memory and learning, visuospatial working memory) at days 90 and 180 compared to placebo. Further, the LZ group showed significant increases in processing speed (CFF), attention, visuospatial processing, and serum Z and BDNF levels on day 180 compared to placebo. No safety concerns were observed. Conclusions Supplementing LZ resulted in increased MPOD levels, along with increased serum levels of L, Z, and BDNF. These changes were associated with improved visual and cognitive performances and reduction in eye strain and eye fatigue in the children receiving LZ gummies. The investigational product was safe and well tolerated. Trial Registration http://ctri.nic.in/ Identifier CTRI/2022/05/042364.

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Temporal vision is related to cognitive function in preadolescent children

Cited by 2 publications

References 39 publications

Critical Flicker Fusion Frequency: A Narrative Review

Critical Flicker Fusion Frequency: A Narrative Review

Lutein and Zeaxanthin Supplementation Improves Dynamic Visual and Cognitive Performance in Children: A Randomized, Double-Blind, Parallel, Placebo-Controlled Study

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