Phase jumps of both sleep and low temperature in jumping free run occurred almost in parallel. This indicated that jumping free run was more delayed relative to body temperature. Sleep rhythm changes may be induced by brain injury. A case study of a 16-year old male who suffered a traumatic brain injury while playing street hockey, developed persistent somnolence. Abnormal blood flow perfusion was also seen in 53-year old auto accident victim.
Sleep disorders continue to affect quality of living.
In the case of the young man with Delayed Sleep Phase Syndrome, total lifestyle has changed. His waking time does not permit him to attend high school as an individual with a normal sleep-wake cycle would. He has also faced ridicule from peers and teachers ignorant of sleep disorders, ignorant of the possibility that such disorders do exist, and pose serious problems for affected individuals. The young man is currency pursuing a career in art, a discipline that will be flexible to his sleep-wake cycle. Much inquiry into sleep research is needed.