PSY 201 Lecture Notes - Lecture 12: Night Terror, Pattern Recognition, Zeitgeber
8 Feb 2018
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Coma: not conscious, some reflexes intact, no hearing, eyesight, communication or emotion. Vegetative state: not conscious, occasional random movement, withdrawal from pain, startles loud noises, wince at brightness, no communication, reflexive emotion, random crying or smiling. Minimally conscious states: partially conscious, reaches for objects, responds to commands by blinking. Brain-injured patient in minimally conscious state was asked to imagine either playing tennis or walking through rooms of house. Brain activation reflected the same differences in these tasks as those seen in healthy controls. Willful modulation of brain activity in disorders of consciousness. Another brain-injured patient in a vegetative state was asked to imagine playing tennis if answer to a question was yes and walking through the rooms if the answer was no. 5 of 6 questions answered correctly, activity for 6th question was uninterpretable. Contents of consciousness depend on which brain circuits are active as part of a coordinated network of brain areas.
