The effect of mild traumatic brain injury on the visual processing of global form and motion

Alnawmasi, Mohammed M; Chakraborty, Arijit; Dalton, Kristine; Quaid, P.T.; Dunkley, Benjamin T.; Thompson, Benjamin

doi:10.1080/02699052.2019.1641842

Cited by 17 publications

(17 citation statements)

References 59 publications

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“…Thus, mTBI-related dysfunction of visual perception (e.g., reading difficulty) might stem from impaired visual detection (due to dysfunction of processes like saccades and convergence, which involve visual pathways between the retina and visual cortex), or from impaired visual processing (due to damage to visual cortex and associated cortices); both scenarios have been reported after mTBI ( Magone et al, 2014 ; Barnett and Singman, 2015 ). Impairments of visual perception (i.e., deficits of detection and processing) after mTBI have been recorded acutely and up to ∼1.5 years post-injury (up to ∼4.2 years post-injury for visual detection deficits alone) ( Magone et al, 2014 ; Alnawmasi et al, 2019 ), no distinction being drawn between complicated and uncomplicated mTBI. In a retrospective study of blast-induced mTBI, visual complaints were reported by 68% of participants, the most common being photophobia and reading difficulties ( Magone et al, 2014 ).…”

Section: Perceptual-motor Functionmentioning

confidence: 99%

“…Such visual detection impairments, including visual field loss, have higher prevalence in msTBI than in mTBI, and can be detected after both blast-induced (military) and non-blast-related (civilian) mTBI ( Capó-Aponte et al, 2017 ; Merezhinskaya et al, 2019 ). Commonly reported deficits of higher-order visual processing include impairments related to form recognition, motion perception, and figure/ground discrimination ( Ciuffreda et al, 2016 ; Alnawmasi et al, 2019 ). Because there are hardly any reports of statistically significant associations between time since injury and visual perception performance, such deficits may remain stable over relatively long periods ( Alnawmasi et al, 2019 ).…”

Section: Perceptual-motor Functionmentioning

confidence: 99%

“…Commonly reported deficits of higher-order visual processing include impairments related to form recognition, motion perception, and figure/ground discrimination ( Ciuffreda et al, 2016 ; Alnawmasi et al, 2019 ). Because there are hardly any reports of statistically significant associations between time since injury and visual perception performance, such deficits may remain stable over relatively long periods ( Alnawmasi et al, 2019 ).…”

Section: Perceptual-motor Functionmentioning

confidence: 99%

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Neuroimaging and Psychometric Assessment of Mild Cognitive Impairment After Traumatic Brain Injury

Calvillo

Irimia

2020

Front. Psychol.

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Traumatic brain injury (TBI) can be serious partly due to the challenges of assessing and treating its neurocognitive and affective sequelae. The effects of a single TBI may persist for years and can limit patients’ activities due to somatic complaints (headaches, vertigo, sleep disturbances, nausea, light or sound sensitivity), affective sequelae (post-traumatic depressive symptoms, anxiety, irritability, emotional instability) and mild cognitive impairment (MCI, including social cognition disturbances, attention deficits, information processing speed decreases, memory degradation and executive dysfunction). Despite a growing amount of research, study comparison and knowledge synthesis in this field are problematic due to TBI heterogeneity and factors like injury mechanism, age at or time since injury. The relative lack of standardization in neuropsychological assessment strategies for quantifying sequelae adds to these challenges, and the proper administration of neuropsychological testing relative to the relationship between TBI, MCI and neuroimaging has not been reviewed satisfactorily. Social cognition impairments after TBI (e.g., disturbed emotion recognition, theory of mind impairment, altered self-awareness) and their neuroimaging correlates have not been explored thoroughly. This review consolidates recent findings on the cognitive and affective consequences of TBI in relation to neuropsychological testing strategies, to neurobiological and neuroimaging correlates, and to patient age at and assessment time after injury. All cognitive domains recognized by the Diagnostic and Statistical Manual of Mental Disorders (DSM-5) are reviewed, including social cognition, complex attention, learning and memory, executive function, language and perceptual-motor function. Affect and effort are additionally discussed owing to their relationships to cognition and to their potentially confounding effects. Our findings highlight non-negligible cognitive and affective impairments following TBI, their gravity often increasing with injury severity. Future research should study (A) language, executive and perceptual-motor function (whose evolution post-TBI remains under-explored), (B) the effects of age at and time since injury, and (C) cognitive impairment severity as a function of injury severity. Such efforts should aim to develop and standardize batteries for cognitive subdomains—rather than only domains—with high ecological validity. Additionally, they should utilize multivariate techniques like factor analysis and related methods to clarify which cognitive subdomains or components are indeed measured by standardized tests.

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Section: Perceptual-motor Functionmentioning

confidence: 99%

Section: Perceptual-motor Functionmentioning

confidence: 99%

Section: Perceptual-motor Functionmentioning

confidence: 99%

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Neuroimaging and Psychometric Assessment of Mild Cognitive Impairment After Traumatic Brain Injury

Calvillo

Irimia

2020

Front. Psychol.

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“…V1 receives visual input and is involved in the early stage of vision processing. Alnawmasi et al [ 57 ] studied the effect of mTBI on the dorsal (control of actions) and ventral streams (identification of objects) that are central to cortical vision processing. The hypothesis is that visual information leaves the occipital lobe via these two streams that run parallel to each other to the parietal lobe (dorsal) and temporal lobe (ventral).…”

Section: Tbi To Vision Loss: Pathophysiological Pathways and Biomechanical Mechanismsmentioning

confidence: 99%

Traumatic brain injury and sight loss in military and veteran populations– a review

Hussain¹,

Raza²,

Cash³

et al. 2021

Military Med Res

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War and combat exposure pose great risks to the vision system. More recently, vision related deficiencies and impairments have become common with the increased use of powerful explosive devices and the subsequent rise in incidence of traumatic brain injury (TBI). Studies have looked at the effects of injury severity, aetiology of injury and the stage at which visual problems become apparent. There was little discrepancy found between the frequencies or types of visual dysfunctions across blast and non-blast related groups, however complete sight loss appeared to occur only in those who had a blast-related injury. Generally, the more severe the injury, the greater the likelihood of specific visual disturbances occurring, and a study found total sight loss to only occur in cases with greater severity. Diagnosis of mild TBI (mTBI) is challenging. Being able to identify a potential TBI via visual symptoms may offer a new avenue for diagnosis.

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“…It is postulated that frontal lobe injury from coup-contracoup injury can lead to frontal gaze center disruption and subtle functional visual changes with convergence insufficie y [5]. Alnawmasi MM, et al found adults with "mild TBI affects processing in both the dorsal and ventral cortical processing streams equally compared to normal controls" [6]. There is preservation of visual acuity for distance.…”

Section: Pathophysiologymentioning

confidence: 99%

Literature Review: Post Traumatic Headache Interventions in the Pediatric Population

Kelley¹,

Berry²,

Ugalde³

2020

Mathews Journal of Pediatrics

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Objective: To report on the current level of knowledge and understanding of post traumatic headache (PTH) in the pediatric population, as well as current best practice for treatment and early interventions.Methods: A review of literature pertaining to the topic was conducted using PUBMED. Results:We identify support for the use of ibuprofen and acetaminophen in combination, occipital nerve block, and craniosacral therapies. Many of the other available therapies are limited by lack of supporting evidence or relevant studies in pediatric populations. Conclusion:PTH is a common problem affecting millions of patients each year. The pathophysiology is still incompletely understood, although risk factors have been identifie . Currently, research focused on pediatric patients with PTH is extremely limited, and no treatment guidelines exist.Much of the current treatment in a clinical setting is based on studies of primary headache disorders or adult patients with PTH. Therefore, additional research in pediatric populations is needed to determine a gold standard of care in this common childhood condition.

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The effect of mild traumatic brain injury on the visual processing of global form and motion

Cited by 17 publications

References 59 publications

Neuroimaging and Psychometric Assessment of Mild Cognitive Impairment After Traumatic Brain Injury

Neuroimaging and Psychometric Assessment of Mild Cognitive Impairment After Traumatic Brain Injury

Traumatic brain injury and sight loss in military and veteran populations– a review

Literature Review: Post Traumatic Headache Interventions in the Pediatric Population

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