Anoxic brain injury can result from anything that causes an inadequate
supply of oxygen to the brain-carbon monoxide poisoning, respiratory arrest,
or anemia, for instance. Certain parts of the brain are vulnerable to
this decrease in oxygen, and these parts of the brain are responsible
for functions such as memory, motor skills, and visual perception.
Anoxic brain injuries do not occur as frequently as traumatic brain injuries
and therefore research is relatively limited. However, since there are
certain brain areas thought to be vulnerable to anoxia, there should also
be fairly clear clinical and functional patterns of impairment.
A recent study combining multi-causal cases of anoxic brain injury found
that anoxic brain injury patients did indeed have poor scores in memory
and visual perception (but not significantly in motor skills). As compared
to traumatic brain injury patients, anoxic brain injury patients were
more likely to acquire late onset seizures, have poorer scores in short-term
and visual memory tasks, and show less progress in rehabilitation.
Fitzgerald A, Aditya H, Prior A, McNeill E, & Pentland B. Anoxic brain
injury: Clinical patterns and functional outcomes. A study of 93 cases.
Brain Injury. (September 2010).