Question

imagine that a rat is lesioned in its locus coeruleus region. how would the sleep in this rat compare to the sleep in a control rat?

• they would sleep the same amount.
• the lesioned rat would sleep more than the control rat.
• the lesioned rat would sleep less than the control rat.
• none of the answers above.

Explanation:

The locus coeruleus is involved in the regulation of wakefulness. Lesioning it would disrupt the normal wake - promoting function. Without the normal activity of the locus coeruleus, the rat would have less wake - promoting signals, leading to more sleep.

Answer:

The lesioned rat would sleep more than the control rat.