Section 2741. Definitions

As used in this article, the term "traumatic
  brain injury" means an  acquired  injury  to  the  brain  caused  by  an
  external  physical  force  resulting  in  total or partial disability or
  impairment and shall include but not be limited to damage to the central
  nervous system from anoxic/hypoxic episodes or  damage  to  the  central
  nervous  system  from  allergic  conditions,  toxic substances and other
  acute medical/clinical incidents. Such term shall include,  but  not  be
  limited  to,  open  and  closed  brain injuries that may result in mild,
  moderate  or  severe  impairments  in  one  or  more  areas,   including
  cognition,  language,  memory,  attention, reasoning, abstract thinking,
  judgment,  problem-solving,  sensory  perceptual  and  motor  abilities,
  psycho-social  behavior,  physical functions, information processing and
  speech.  Such term shall not include  progressive  dementias  and  other
  mentally  impairing  conditions, depression and psychiatric disorders in
  which there is no  known  or  obvious  central  nervous  system  damage,
  neurological,   metabolic  and  other  medical  conditions  of  chronic,
  congenital or degenerative nature or brain  injuries  induced  by  birth
  trauma.