1. How do we know that the increased dreaming shown by Dement's research participants was due to REM deprivation specifically and not due to being awakened repeatedly?
Dement was unable to account for this possibility because he had no good way to tell when his research participants were in REM sleep.
Dement included a control condition in which participants were awakened repeatedly during non-REM periods of sleep, as a comparison.
Dement used "light sleepers" as his research participants, and these people were prone to waking up repeatedly throughout the night anyway.
Dement failed to make the important distinction between REM sleep and non-REM sleep, and this is a major criticism of his research.
2. Sperry and Gazzaniga concluded from their research on split-brain patients that
split-brain surgery is a radical but effective cure for certain serious mental illnesses, such as schizophrenia
each hemisphere of the brain has specialized functions and is really a mind of its own
the hemispheres of the brain cannot operate independently and must be connected in order for a person to function.
splitting the hemispheres of the brain produces radically different personalities that alternate.
3. When Sperry and Gazzaniga placed an object in the left hand of split-brain patients but kept them from seeing it, what happened?
The split-brain patients were unaware that an object had been placed in their hand.
The split-brain patients were comatose and were unable to respond in any way.
The split-brain patients could name the object verbally but could not describe what I looked like or identify a photograph of it describe what it looked like or identify a photograph of it.
The split-brain patients were unable to name the object verbally but they could pick out the correct object from a visual lineup of various objects
4. When Dement's research subjects were in the REM-interruption phase of the study (when they were being awakened every time they started to dream), what behavioral changes did they show?
1. Increased anxiety, 2. increased appetite 3. difficult concentration 4. all the above
5.Which of the following statements is true?
5. Split-brain patients lose all ability to give verbal reports of objects that they have seen.
In order for you to say you saw something, the object must be seen by the right side of your brain.
In order for you to say you saw something, the object must be seen by the left side of your brain.
In order for you to say you saw something, the object must be seen by both sides of your brain.