Residual alterations of brain electrical activity in clinically asymptomatic concussed individuals: An EEG study

Return to Activity after Concussion Affects Dual-Task Gait Balance Control Recovery

“…A recent investigation by Teel et al (30) found that participants who sustained a concussion in the past week performed at the same level as control participants on traditional cognitive assessments although still exhibiting pathological dysfunction of brain electrical activity. It was suggested that current tools used to assess RTA after concussion may not possess the required sensitivity to detect such deficits after injury.…”

“…Further, a previous study has identified gait stability worsening from 2 wk to 1 month postinjury in a group of collegiate athletes who each returned to their sport within 2 wk of injury despite not reporting a second concussion (23). Other studies have concluded that traditional methods used to determine RTA timing may not possess sufficient sensitivity to detect concussion-related abnormalities that persist beyond symptom or clinical resolution (25,30). Thus, returning to activity when recovery is not complete may exacerbate deficits related to incomplete recovery and may result in the worsening of frontal plane motion control observed during dual-task walking.…”

In-clinic event related potentials after sports concussion: A 4-year study

“…Neuropsychological assessment is one of the main clinical evaluation tools following concussion, though sometimes return to pre-concussion testing performance can take place when the subjects are still symptomatic and vice versa [11][12][13]. Studies have also demonstrated that some concussed players who passed clinical tests still displayed electrophysiological deficits, suggesting brain-network compensation to achieve normal functioning [14]. Numerous other studies have also demonstrated the persistence of al-1874-5393/20/$35.00 c 2020 -IOS Press and the authors.…”

Study of Sleep Patterns Might Advance Our Knowledge on Alertness in Traumatic Brain Injury

“…Moreover, the quality and quantity of spindles can provide a new index of the severity of thalamocortical injury, in accordance with brain imaging studies showing the correlation between the extent of thalamus damage and behavioral disability and outcome in disorders of consciousness [10][11][12][13].Gosselin and colleagues observed increased delta and decreased alpha activity during wakefulness in patients with mild TBI and proposed sleep intrusions in the waking state might indicate continuous sleep inertia, manifesting as fatigue and impaired functioning [14]. The clinical significance of the utility of EEG in TBI is reflected in a recent study by Teel et al [15].While concussed participants passed all clinical concussion testing tools, they showed path physiological dysfunction with evaluation of EEG variables,supporting the hypothesis of diminishedbrain resources to compensate appropriately during activity [15].The results of the study areparticularly relevant to clinicians who make return-toplay or return-to-work decisions (i.e. in sport, first respondents, and other occupations requiring sustained attention).…”