Capuchin monkeys (Cebus apella) respond to video images of themselves |
| |
Authors: | James R Anderson Hika Kuroshima Annika Paukner Kazuo Fujita |
| |
Institution: | (1) Department of Psychology, University of Stirling, Stirling, FK9 4LA, Scotland, UK;(2) Present address: Psychology Department, University of Georgia, Athens, GA 30602-3013, USA;(3) Present address: Laboratory of Comparative Ethology, NIH Animal Center, PO Box 529, Poolesville, MD 20837, USA;(4) Present address: Department of Psychology, Graduate School of Letters, Kyoto University, Sakyo-ku, Kyoto 606, Japan |
| |
Abstract: | Many studies have used mirror-image stimulation in attempts to find self-recognition in monkeys. However, very few studies
have presented monkeys with video images of themselves; the present study is the first to do so with capuchin monkeys. Six
tufted capuchin monkeys were individually exposed to live face-on and side-on video images of themselves (experimental Phase
1). Both video screens initially elicited considerable interest. Two adult males looked preferentially at their face-on image,
whereas two adult females looked preferentially at their side-on image; the latter elicited lateral movements and head-cocking.
Only males showed communicative facial expressions, which were directed towards the face-on screen. In Phase 2 monkeys discriminated
between real-time, face-on images and identical images delayed by 1 s, with the adult females especially preferring real-time
images. In this phase both screens elicited facial expressions, shown by all monkeys. In Phase 3 there was no evidence of
discrimination between previously recorded video images of self and similar images of a familiar conspecific. Although they
showed no signs of explicit self-recognition, the monkeys’ behaviour strongly suggests recognition of the correspondence between
kinaesthetic information and external visual effects. In species such as humans and great apes, this type of self-awareness
feeds into a system that gives rise to explicit self-recognition. |
| |
Keywords: | Capuchin Video Mirror Self-recognition Self-awareness Visual preference Facial expressions |
本文献已被 PubMed SpringerLink 等数据库收录! |
|