Mirror Image Equivalence in the Perception of Stimuli by Brown Capuchin Monkeys (Cebus apella) Pubblico
Tabbah, Charine (2010)
Abstract
Abstract
Mirror Image Equivalence in the Perception of Stimuli by Brown
Capuchin Monkeys
( Cebus apella)
By Charine Tabbah
Mirror image equivalence, or the inability to discriminate between
mirror images, has
been expressed in some nonhuman primates. It is hypothesized that
humans are more
adept at discriminating mirror images due to lateralization and
hemisphere specialization
in the brain. As demonstrated by children confusing letters of the
English alphabet with
their mirror image, mirror image discrimination may not be an
innate ability, rather a
learned ability, in humans. In the current study, we tested brown
capuchin monkeys
( Cebus apella) on both left right and up down mirror images
in an oddity paradigm under
a probe and a learning condition. We found no evidence that they
can spontaneously
discriminate both left-right and up-down mirror images, but they
may have the capacity
to learn to discriminate both. Future studies should look at
learning over a longer period
of time, and introduce more complex stimuli.
Table of Contents
Table of Contents
Introduction
.........................................................................................................................1
Figure 1
..............................................................................................................................11
Methods..............................................................................................................................15
Figure 2
..............................................................................................................................17
Figure 3
..............................................................................................................................18
Results
................................................................................................................................22
Table 1
...............................................................................................................................24
Discussion
..........................................................................................................................26
Figure 4
..............................................................................................................................28
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