Duke University, Durham, NC

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Duke University, Durham, NC

Administering Electric Shocks to a Lemur

"This lab performed animal experiments involving pain or distress but no analgesics, anesthetics or pain relievers were administered."

To view footage again, please select the "refresh" button on your computer.

This is "non-invasive" only by comparing it to the protocols where devices are bolted to the skull and the primates are confined to restraint chairs.

But then this project does much less, it does not monitor brain activity. It only allows you to see what a lemur sees. It is similar to a helmet cam in football.

In addition, the lemur has to carry something that is about 1/4 of his/her body weight all the time.

From:  http://www.neuro.duke.edu/faculty/platt/gallery5.html

Lemur wearing gaze-tracking device
Behavioral and neurophysiological studies suggest that visual orienting reflects the integration of sensory, motor, and motivational variables which depend on behavioral goals. Relatively little is known about the behavioral goals governing visual orienting in natural conditions, in part because accurate gaze-tracking technology has not been employed in field studies. To address this issue, we have implemented a telemetric infrared video gaze-tracking system (ISCAN) to record overt visual orienting in primates moving freely in naturalistic environments.

In one set of experiments, we have begun to measure visual orienting in medium-sized prosimian primates at the Duke University Primate Center. In these studies, a single lemur subject has been trained to wear the gaze-tracking device while freely moving through a relatively large 3-dimensional environment. The first video shows the subject animal licking his foot and then leaping to a box on the wall of the enclosure.

The next two video clips display the scene visible from the lemur's head, with the crosshair indicating direction of gaze. In these clips, the animal attempts to avoid his handler by leaping through a small window separating halves of the enclosure. The first of these two clips is in real-time, while the second is slowed for clarity: Note the extent to which gaze predicts the lemur's route through its environment. These experiments provide the first measurement of visual orienting in a freely-moving animal, as well as the first quantitative measurements of the eye movements of Lemur catta.

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Rats, mice, birds, amphibians and other animals have been excluded from coverage by the Animal Welfare Act. Therefore research facility reports do not include these animals. As a result of this situation, a blank report, or one with few animals listed, does not mean that a facility has not performed experiments on non-reportable animals. A blank form does mean that the facility in question has not used covered animals (primates, dogs, cats, rabbits, guinea pigs, hamsters, pigs, sheep, goats, etc.). Rats and mice alone are believed to comprise over 90% of the animals used in experimentation. Therefore the majority of animals used at research facilities are not even counted.

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