TY - JOUR
T1 - Fragment-based learning of visual object categories in non-human primates
AU - Kromrey, Sarah
AU - Maestri, Matthew
AU - Hauffen, Karin
AU - Bart, Evgeniy
AU - Hegdé, Jay
PY - 2010
Y1 - 2010
N2 - When we perceive a visual object, we implicitly or explicitly associate it with an object category we know. Recent research has shown that the visual system can use local, informative image fragments of a given object, rather than the whole object, to classify it into a familiar category. We have previously reported, using human psychophysical studies, that when subjects learn new object categories using whole objects, they incidentally learn informative fragments, even when not required to do so. However, the neuronal mechanisms by which we acquire and use informative fragments, as well as category knowledge itself, have remained unclear. Here we describe the methods by which we adapted the relevant human psychophysical methods to awake, behaving monkeys and replicated key previous psychophysical results. This establishes awake, behaving monkeys as a useful system for future neurophysiological studies not only of informative fragments in particular, but also of object categorization and category learning in general.
AB - When we perceive a visual object, we implicitly or explicitly associate it with an object category we know. Recent research has shown that the visual system can use local, informative image fragments of a given object, rather than the whole object, to classify it into a familiar category. We have previously reported, using human psychophysical studies, that when subjects learn new object categories using whole objects, they incidentally learn informative fragments, even when not required to do so. However, the neuronal mechanisms by which we acquire and use informative fragments, as well as category knowledge itself, have remained unclear. Here we describe the methods by which we adapted the relevant human psychophysical methods to awake, behaving monkeys and replicated key previous psychophysical results. This establishes awake, behaving monkeys as a useful system for future neurophysiological studies not only of informative fragments in particular, but also of object categorization and category learning in general.
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U2 - 10.1371/journal.pone.0015444
DO - 10.1371/journal.pone.0015444
M3 - Article
C2 - 21124837
AN - SCOPUS:78649658556
SN - 1932-6203
VL - 5
JO - PloS one
JF - PloS one
IS - 11
M1 - e15444
ER -