Introduction: The need to identify functional impairment following a brain injury is critical prevent reinjury during the period of recovery. However, little known about effect concussion on dynamic motor function. Purpose: purpose this study was examine task under conditions divided and undivided attention over course 28 d. Methods: Fifteen subjects with concussions (CONC) 15 uninjured controls (NORM) were observed while walking concurrently completing simple mental tasks. CONC assessed...

Background Head trauma in adolescents has been linked with deficits attention and executive function that can compromise the performance of everyday tasks. Although previous research examined this issue using computerized neuropsychological testing, little work done laboratory-based measurements population. A longitudinal analysis recovery patterns these measures among is central to understanding effects concussions across age spectrum. Purpose This study prospectively longitudinally...

The goal of the current investigation was to probe deficits in alerting, orienting and executive components visuospatial attention individuals who have recently suffered a mild traumatic brain injury (mTBI) assess rate degree recovery for each these over month post-injury. A group design employed compare performance participants (12 males, 8 females; mean age: 21 ± 1.74 years) identified with mTBI relative control subjects matched gender, age, height, weight activity level. Participants...

Fractals have been very successful in quantifying the visual complexity exhibited by many natural patterns, and captured imagination of scientists artists alike. Our research has shown that poured patterns American abstract painter Jackson Pollock are also fractal. This discovery raises an intriguing possibility – characteristics fractals responsible for long-term appeal Pollock's work? To address this question, we conducted ten years scientific investigation human response to here present,...

Objective: Neuropsychological testing has been advocated as an important tool of proper post-concussion management. Although these measures provide information that can be used in the decision when to return individual previous levels physical activity, they little data on motor performance following injury. The purpose this investigation was examine relationship between dynamic and neuropsychological function concussion over course 28 days. Methods: Participants completed two experimental...

Abstract The purpose of this study was to longitudinally compare the sensitivity previously documented paradigms for measuring balance control during gait following a concussion. We hypothesized that with concurrent cognitive task would be most sensitive effects concussion on dynamic control. Individuals (n = 30) and matched controls performed single level walking, attention divided an obstacle-crossing at two heights. Testing occurred four times post-injury. Balance assessed whole-body...

The question of how infants attain upright sitting is at the core understanding development most functional abilities. Our simple, practical method securing hips and different trunk segments while evaluating infant's ability to vertically align stabilize in space contributes a useful new insights into control. Previous studies have considered develop as single segment. goal present study was examine postural control changes across multiple during typical (TD) balance. For this purpose,...

Abstract The purpose of this study was to examine how individuals modulate attention in a gait/cognition dual task during 4-week period following concussion. Ten suffering from grade 2 concussion and 10 matched controls performed single level walking, seated auditory Stroop simultaneous walking task. Reaction time accuracy were measured the Dynamic balance control gait by interaction (displacement velocity) between center mass (CoM) pressure (CoP) coronal sagittal planes. Concussed shifted...

Impact-related mild traumatic brain injuries (mTBI) are a major public health concern, and remain as one of the most poorly understood in field neuroscience. Currently, diagnosis management such based largely on patient-reported symptoms. An improved understanding underlying pathophysiology mTBI is urgently needed order to develop better diagnostic protocols. Specifically, dynamic post-injury changes myelin sheath human have not been examined, despite 'compromised white matter integrity'...

Sport-related concussion is known to affect a variety of brain functions. However, the impact this injury on cerebral autoregulation (CA) poorly understood. Thus, goal current study was determine acute and cumulative effects sport-related indices dynamic CA. Toward end, 179 elite, junior-level (age 19.6 ± 1.5 years) contact sport (ice hockey, American football) athletes were recruited for preseason testing, 42 with zero prior concussions 31 three or more previous concussions. Eighteen...

Single-unit recordings were made from the basal-ganglia- and cerebellar-receiving areas of thalamus in two monkeys trained to make arm movements that either visually triggered (VT) or internally generated (IG). A total 203 neurons displaying movement-related changes activity examined detail. Most these cells (69%) showed an increase firing rate relation onset movement could be categorized according whether they fired VT task exclusively, IG both tasks. The proportion each category was found...

A number of different sites in the human brain have been shown to play a role sensorimotor adaptation. However, specific played by each these structures learning process is poorly understood. In present study, contribution dorsal aspect premotor cortex was examined disrupting activity at this site using transcranial magnetic stimulation (TMS) while subjects wearing prism goggles pointed visual targets. This manipulation slowed down rate adaptation when vision hand available throughout...