Study Design: A systematic review of the literature concerning the nature of the psychological morbidity in people with spinal cord injury (SCI). Objectives: SCI is believed to place the individual at a high risk of psychological morbidity. The objective of this paper was to examine systematically the prevalence of negative psychological states in people with SCI, as well as to explore mediating and contextual factors. Methods: Search engines such as Medline and PsycInfo were systematically searched using specific key words, such as SCI, depression, anxiety and so on. Only studies that fulfilled certain criteria such as the use of valid measures in assessing psychological morbidity were used in the review process. Results: The systematic review revealed that clarification is still needed concerning the psychological consequences of people with SCI. However, findings suggest that approximately 30% of people with SCI are at risk of having a depressive disorder although in rehabilitation, and approximately 27% are at risk of having raised depressive symptoms when living in the community. The review also established that people with SCI have higher comparative risks of anxiety disorder, elevated levels of anxiety, feelings of helplessness and poor quality of life (QOL). Conclusion: People with SCI have an increased risk of suffering debilitating levels of psychological morbidity. Future research needs to clarify the extent and nature of psychological morbidity following SCI by conducting prospective and comprehensive research in large heterogeneous samples of people with SCI during the rehabilitation phase and following reintegration into the community.

Assessing brain wave activity is a viable strategy for monitoring fatigue when performing tasks such as driving, and numerous studies have been conducted in this area. However, results of a systematic review on changes in brain wave activity associated with fatigue have revealed equivocal findings. This study investigated brain wave activity associated with fatigue in 48 nonprofessional healthy drivers as they participated in a simulated driving task until they fatigued. The results showed that as a person fatigues, slow wave activity increased over the entire cortex, in theta and in alpha 1 and 2 bands, while no significant changes were found in delta wave activity. Substantial increases also occurred in fast wave activity, though mostly in frontal sites. The results suggest that as a person fatigues, the brain loses capacity and slows its activity, and that attempts to maintain vigilance levels lead to increased beta activity.