Electric shock produced drinking in the squirrel monkey.

Area of Science:

• Animal Behavior
• Neuroscience
• Ethology

Background:

• Squirrel monkeys exhibit complex behaviors when exposed to stimuli.
• Electric shocks can elicit defensive and aggressive responses in primates.

Purpose of the Study:

• To investigate the behavioral responses of squirrel monkeys to electric tail shocks.
• To determine the relationship between shock-induced aggression and drinking behavior.

Main Methods:

• Squirrel monkeys were exposed to periodic electric tail shocks in a controlled environment.
• Behavioral responses including lever pressing, hose biting, and licking were recorded.
• Water deprivation levels were manipulated to assess their influence on licking.

Main Results:

• Electric shocks elicited preshock lever pressing and postshock hose biting (aggression).
• Licking responses, identified as drinking behavior, consistently followed biting-attack episodes.
• Drinking was influenced by water deprivation and occurred spontaneously, independent of attack opportunities.

Conclusions:

• Noxious stimuli causing aggression can also induce drinking behavior in squirrel monkeys.
• The study suggests a potential link between aggression and consummatory behaviors, possibly mediated by stress responses.
• Drinking behavior can be a direct consequence of experiencing a noxious stimulus, even in the absence of overt aggression.