Lasting Wake/Sleep Disturbances in Traumatic Brain Injury
Joint research with UCLA
Traumatic brain injury (TBI) is relatively widespread among young adults following driving and sports-related accidents. Mood depression, fatigue, sleepiness, concentration difficulties, generalized anxiety, and vegetative or somatic symptoms arise within the first year post-TBI. Depression and other post-concussion symptoms can persist for months to years post-TBI, and may eventually become a permanent symptomatology that causes significant and costly disability (Dikmen & al, 2004; Ryan & Warden, 2003). Serious alterations in neurobehavioral processes (e.g., sleep phases, circadian rhythms) are common in animal experimental preclinical models, and in human clinical studies of patients with TBI (Frieboes et al, 1999), however, whether they are sustained in the long-term is not known.
[status: research in progress]
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The Effects of Varying Intensity Levels of Physical Activity on the Cognitive, Emotional, and Disability Status of the Traumatically Brain-Injured Adult
Improvements in the quality of life, strength and endurance, cognitition, and emotional status are a
few of the attributes associated with becoming physically fit. It is common for the traumatically
brain-injured (TBI) patient to suffer deficits in these areas as part of the complex neurobehavioral
sequelae of his/her injury. A pilot retrospective analysis of 25 patients indicated that the group
which participated in an aerobic conditioning program made statistically significant improvements
(p<.05) on rated disability status, at admission and discharge, when compared to a group of patients
who did not participate in aerobic conditioning. Data from a follow-up experimental study of 23
patients showed statistically significant changes in multiple cognitive and emotional status scores
when analyzed before and after physical activity (Digit Span, Beck Depression Inventory, and the
Suicide Probability Scale, p<.05). Possible behavioral and physiological explanations for the
results, and the potential of varying intensities of physical activity to act as a catalyst for
positive changes in the cognitive and emotional status of the TBI patient are discussed.
[status: research complete and in writing phase]
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Long-Term Effects of Traumatic Brain Injury on Marital Status
Previous studies have demonstrated the consequences of traumatic brain injury and its impact on the
family. However, the effects of brain injury on long-term marital conditions have not been as
thoroughly investigated. This study surveyed 298 adults who had completed post-acute brain injury
rehabilitation as to current marital status. The mean latency from discharge to survey was 5 years.
Descriptive and correlational statistical analysis was conducted on marital status, demographic
data, and disability ratings. Results indicated that 46% of the subjects had divorced since the
injury. Divorce since injury was significantly correlated with age, latency from discharge, latency
from injury, length of rehabilitation, gender, and vocational status. Current marital status did not
correlate with any disability ratings. The influence of these factors on marital status after
traumatic brain injury will be discussed.
[status: research in progress]
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Behavior Survey
[status: survey complete and in data collection phase]
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Diffusion Tensor MRI
[status: research in planning phase]
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fMRI
[status: research in planning phase]