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A researcher has decided to lesion different parts of a cat’s brain and observe the effects on the cat’s behavior. After the surgery, the researcher notices that the cat is having trouble walking in a straight line. The cat also does not respond to the researcher randomly blowing a whistle like it did before the surgery. The researcher also noted that the cat’s sleep/wake cycle has changed since the surgery. What part of the brain did the researcher most likely lesion?

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Answer:

reticular formation

Step-by-step explanation:

  • A matrix consisting of nerve fibers as well as cell bodies of the neurons that form a greater part of the core of the brainstem is termed as the reticular formation.
  • The reticular formation extends from the medulla to the intralaminar nuclei of the thalamus.
  • The main function of the neurons of the reticular formation is to maintain consciousness and motor arousal.

In brief this region controls the following :

1. somatic motor control

2. cardiovascular control

3. sleep

4. consciousness

5. habituation

6. pain modulation

Since the cat is having problems with the sleep-wake cycle, does not respond to the researcher, there is a change in behavior and inability to walk on straight line. This points out to damage in the reticular formation.

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