Concept Quiz 5.3 Flashcards
After cardiac arrest, Teresa’s father, Ike, is in a coma. Ike’s doctor explains to Teresa that his brain activity shows ____.
Only alpha waves that are distinct from those of normal sleeping pattern
Which person displays the characteristic signs of a persistent vegetative state?
Andrew is in a coma; his mother is hopeful because he occasionally opens his eyes and sometimes smiles or cries, but Andrew’s doctors tell her that these actions are random
Brain death is characterized by ____.
Two flatline EEG recordings taken 24 hours apart
What physiological response may be responsible for the phenomenon of near death experience characterized by out-body-death experiences, the perception of light at the end of a tunnel, and the state of calmness?
Release of chemicals to minimize cell loss in the brain
After a visit to the emergency department, Regina learns that she likely suffers a partial seizure in her ____ lobe.
Temporal
Which is NOT true of a person in a state of coma?
A person may respond to pain and light
Vegetative state often follows a period of coma.
True
Brain death is identified as _____.
A complete and irreversible lack of measurable brain activity
More than 8 million Americans have reported _____.
A near-death experience
____ are uncontrolled electrical disturbances the brain that are often correlated with changes in consciousness.
Seizures
A stroke affecting a single hemisphere typically does not lead to a coma.
True
In contrast to patients in a coma, patients in a vegetative state look ____.
Normal
Patients who recover after a cardiac arrest or some other life-threatening conditions often report ____.
Similar experiences
Natalia experienced which type of seizure?
Generalized tonic-clonic
Since seizures are correlated with changes in consciousness, they provide evidence that _____.
Cortical activity is correlated with consciousness
