Geometric distortions affect face recognition in chimpanzees (Pan troglodytes) and monkeys (Macaca mulatta).

Animal Cognition
Jessica Taubert, L A Parr

Abstract

All primates can recognize faces and do so by analyzing the subtle variation that exists between faces. Through a series of three experiments, we attempted to clarify the nature of second-order information processing in nonhuman primates. Experiment one showed that both chimpanzees (Pan troglodytes) and rhesus monkeys (Macaca mulatta) tolerate geometric distortions along the vertical axis, suggesting that information about absolute position of features does not contribute to accurate face recognition. Chimpanzees differed from monkeys, however, in that they were more sensitive to distortions along the horizontal axis, suggesting that when building a global representation of facial identity, horizontal relations between features are more diagnostic of identity than vertical relations. Two further experiments were performed to determine whether the monkeys were simply less sensitive to horizontal relations compared to chimpanzees or were instead relying on local features. The results of these experiments confirm that monkeys can utilize a holistic strategy when discriminating between faces regardless of familiarity. In contrast, our data show that chimpanzees, like humans, use a combination of holistic and local features when the...Continue Reading

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Citations

Oct 31, 2012·Brain Structure & Function·Steven A ChanceTimothy J Crow
Aug 16, 2014·Frontiers in Psychology·Steven A Chance
Jun 28, 2012·Cognitive Neuroscience·Jessica Taubert, Lisa A Parr
Aug 18, 2012·Perception·Jessica TaubertLisa A Parr
Apr 19, 2018·Journal of Cognitive Neuroscience·Sharon Gilad-GutnickPawan Sinha
Jan 2, 2018·Royal Society Open Science·Franziska KnolleA Jennifer Morton
Oct 28, 2019·Scientific Reports·Jessica TaubertLeslie G Ungerleider

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