Sleep imaging and the neuropsychological assessment of dreams

Recent neuroimaging studies show that human rapid-eye-movement (REM) sleep is characterized by a specific pattern of regional brain activity. Although this is usually interpreted in relation to physiological and cellular mechanisms, the specific regional distribution of brain activity during REM sleep might also be linked to specific dream features. Remarkably, several bizarre features of normal […]

Behavioural and Neural Correlates of Mental Imagery in Sheep Using Face Recognition Paradigms

Determining objective measures for proof of consciousness in non-human animals has been helped by improved understanding of neural correlates of human consciousness. Functional imaging and neuropsychological studies have shown remarkable overlap between structures involved in actual perception of social and non-social objects and those involved in forming mental images of them. One area of particular […]

Recognizing Facial Cues: Individual Discrimination by Chimpanzees (Pan troglodytes) and Rhesus Monkeys (Macaca mulatta)

Faces are one of the most salient classes of stimuli involved in social communication. Three experiments compared face-recognition abilities in chimpanzees ( Pan troglodytes) and rhesus monkeys ( Macaca mulatta). In the face-matching task, the chimpanzees matched identical photographs of conspecifics’ faces on Trial 1, and the rhesus monkeys did the same after 4 generalization […]