Test on Neurobiology of Sexual Reward and Behavior

Question 1: The study materials indicate that for sexually naive rats, achieving only mounts during sexual experience trials was sufficient for them to copulate to ejaculation normally in a final test.

A. Ano

B. Ne

Explanation: The study materials state that 'Many rats that achieved only mounts during their sexual experience trials did not copulate whereas rats that achieved intromissions with or without ejaculation were able to copulate to ejaculation normally.' This demonstrates that mounts alone were not sufficient for normal copulatory behavior.

Question 2: According to the study, how did the initial pacing conditions affect the copulatory activity of male rats?

A. Males trained in the 4-hole condition developed faster ejaculation latencies.

B. Males trained in the 1-hole condition developed more intromissions before ejaculation.

C. Males in the 4-hole condition required more intromissions before ejaculation compared to those in the 1-hole condition.

D. When switched to the other condition, males immediately adopted the new condition's typical ejaculatory pattern.

Explanation: The study states that males trained in the 4-hole condition developed faster ejaculation latencies and fewer intromissions before ejaculation. Conversely, males trained in the 1-hole condition developed slower ejaculation latencies and more intromissions before ejaculation. When switched to the other condition, they maintained their previously established ejaculatory pattern, not immediately adopting the new condition's pattern.

Question 3: Naloxone infusions into the medial preoptic area (mPOA) disrupt the development of post-ejaculatory conditioned place preference (CPP) in male rats.

A. Ano

B. Ne

Explanation: The study materials state that naloxone's disruption of the development of post-ejaculatory CPP occurred following infusions into the mPOA.

Question 4: According to the study materials, which brain region shows dynamic reorganization corresponding to the acquisition of baseline rates of sexual behavior in male rats, consistent with its critical role in motor habit learning?

A. The medial preoptic area (mPOA)

B. The ventromedial hypothalamus (VMH)

C. The cerebellar vermis

D. The medial amygdala

Explanation: The study materials state that the acquisition of baseline rates of sexual behavior in male rats appears to correspond to dynamic reorganization of the cerebellar vermis, consistent with its critical role in motor habit learning.

Question 5: In the Kippin et al. (1998) study on male rats, the Unpaired group showed no significant ejaculatory preference between scented and unscented females.

A. Ano

B. Ne

Explanation: The study states that males in the Unpaired group had the opposite preference, choosing to ejaculate first, and more times overall, with the unscented females, indicating a significant ejaculatory preference, not an absence of one.