Question

Miiler and coworkers had discovered that that the central medial thalamus plays a role in arousal and seizure propagation. Miller found that microinfusions of GABA agonists into the central medial thalamus would cause a rat to lose consciousness, often within 90 seconds. When Alkire and coworkers gave nicotine microinfusions localized onto the central medial thalamus, rats awoke from anaesthesia:___.

a. After a period of a couple hours
b. Despite all odds
c. If, and only if, they were simultaneously administered a brief electric shock
d. Despite still being in the middle of a chamber filled with anaesthesia
e. If, and only if, they were removed from the chamber filled with anaesthesia

Answer 1

The central medial thalamus is involved in arousal and seizure propagation. GABA agonists cause loss of consciousness, while nicotine microinfusions can wake up rats from anesthesia if a brief electric shock is administered or if they are removed from the chamber containing anesthesia.

Step-by-step explanation:

The central medial thalamus is involved in arousal and seizure propagation, as discovered by Miiler and coworkers. They found that microinfusions of GABA agonists into this area would cause a rat to lose consciousness.

However, when Alkire and coworkers gave nicotine microinfusions specific to the central medial thalamus, rats woke up from anesthesia only if they were simultaneously administered a brief electric shock or were removed from the chamber containing anesthesia.