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Primate Research Institute, Kyoto University
Rilling / Poster
FUNCTIONAL NEUROIMAGING OF LINGUISTIC PROCESSING IN CHIMPANZEES.
J. Rilling3*, C. Kilts2,3, S. Williams1, J. Kelley1,
M. Beran1, M. Giroux4, JM. Hoffman2,4, S. Savage-Rumbaugh1,
and D. Rumbaugh1.
The objective of this study was to determine if humans and
language competent chimpanzees recruit homologous neural substrates when processing
linguistic stimuli. Following an intramuscular injection of 18F-FDG (10 mCi), two adult
female chimpanzees ("Panzee" and "Lana") engaged in computerized
speech and symbol comprehension tasks during the 40 minute period of glucose uptake into
the brain. After the task, subjects were anesthetized with ketamine and 2% isoflurane and
scanned in a Siemens 951 PET tomograph. Replicate scans were acquired from each chimp and
both were also scanned following a sensorimotor control task. Two human subjects received
H215O PET scans while performing the same tasks. Prior to statistical analyses, all scans
were spatially registered to an anatomical MRI.