PSYC31H3 Chapter Notes - Chapter 7: Superior Colliculus, Extraocular Muscles, Muteness
14 Oct 2016
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Traumatic brain injury: traumatically induced physiological disruption of brain function: manifested by one or more of the following: Alteration in mental state at the time of the incident (e. g. , feeling dazed, disoriented, Loss of memory for events immediately before or after the accident. or confused). Focal neurological deficit(s) that may or may not be transient: coup/countercoup. Because the brain is buoyant in cerebral spinal fluid and when a bat hits the forehead, the skull moves backwards, but because of inertia, the brain moves forward" relative to the skull: penetrating (open) head injuries. Accounts for less than 10% of head injuries. Focal lesions usually produce relatively circumscribed and predictable cognitive losses. However, the penetrating object may also cause damage throughout the brain as a result of shock waves and pressure effects. When one brain area is down, the pathway is blocked so other brain. Rapid gains in the first 1-2 years.
