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Monkey recall memory mirrors that of humans
Date:4/28/2011

A new study shows for the first time that monkeys can recall and reproduce simple shapes from memory. Identifying this recall ability is critical to our understanding of the evolution of memory and other cognitive abilities, and it could be applied to better diagnosing and treating memory impairments in humans.

The finding by Emory University psychologists and Yerkes National Primate Research Center researchers Ben Basile and Robert Hampton was published today (April 28) in the journal Current Biology. The psychologists developed a computer touchscreen method to test the recall power of rhesus monkeys at the Yerkes Research Center at Emory.

"Our observations of recall in Old World monkeys suggest it may have been adaptive in primates long before humans evolved, and that it does not depend on language or anything else that is uniquely human," Basile says.

"We believe we have found a new method for testing animals that opens a whole new window into the world of nonhuman memory research," Basile adds. "For the first time, monkeys can actually show us what they recollect, and their test results are directly comparable to human tests."

Such human tests may include reciting a poem or sketching the face of someone you met yesterday. These are recall tasks because they require retrieving information about something that isn't present. Recognition, in contrast, demonstrates the ability to detect that something is familiar when it is seen again.

In humans, recognition and recall tests can be supported by two different types of memory. This difference is most clearly seen in some rare cases of amnesia, where patients can easily recognize objects that are before them but have lost the ability to recall those same objects when they are out of sight.

Previous research has established the ability of monkeys and many other animals to recognize objects. The lack of language, however, has thwarted efforts to test r
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Contact: Beverly Clark
beverly.clark@emory.edu
404-712-8780
Emory University
Source:Eurekalert

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