Massive Endometriosis in Two Rhesus Monkeys

Radioisotope imaging of brain tumors in two rhesus monkeys.

Prevalence of endometriosis in rhesus (Macaca mulatta) monkeys ingesting PCB (Aroclor 1254): review and evaluation.

A total of 80 menstruating rhesus monkeys (Macaca mulatta) were equally and randomly divided among groups receiving 0, 5, 20, 40, or 80 mu g of Aroclor 1254/kg body weight/day during a 6-year toxicological-reproduction study. During the first 3 years of the study, 4 of the treated monkeys became moribund and were euthanized; 3 had endometriosis. This finding suggested a possible link between th...

Self-agency in rhesus monkeys.

Rhesus monkeys (Macaca mulatta) have shown the ability to monitor their own mental states, but fail the mirror self-recognition test. In humans, the sense of self-agency is closely related to self-awareness, and results from monitoring the relationship between intentional, sensorimotor and perceptual information. Humans and rhesus monkeys were trained to move a computer icon with a joystick whi...

Condylar growth in rhesus monkeys.

The advent of autoradiography has made it possible to add information on cellular dynamics to histologic observations of morphologic details reported in previous studies.1Condylar growth has been studied extensively in rodents by autoradiographic technics.';-' Since the temporomandibular joint and masticatory function in the rhesus monkey more clearly resemble the human situation, cellular dyna...

Spontaneous Metacognition in Rhesus Monkeys.

Metacognition is the ability to think about thinking. Although monitoring and controlling one's knowledge is a key feature of human cognition, its evolutionary origins are debated. In the current study, we examined whether rhesus monkeys (Macaca mulatta; N = 120) could make metacognitive inferences in a one-shot decision. Each monkey experienced one of four conditions, observing a human appeari...