Abstract：
:The ability to extract the direction of the other's gaze allows us to shift our attention to an object of interest to the other and to establish joint attention. By mapping one's own intentions on the object of joint attention, humans develop a Theory of (the other's) Mind (TOM), a functional sequence possibly disrupted in autism. Gaze following of both humans and old world monkeys is orchestrated by very similar cortical architectures, strongly suggesting homology. Also new world monkeys, a primate suborder that split from the old world monkey line about 35 million years ago, have complex social structures and one member of this group, the common marmosets (Callithrix jacchus) are known to follow human head-gaze. However, the question is if they use gaze following to establish joint attention with conspecifics. Here we show that this is indeed the case. In a free choice task, head-restrained marmosets prefer objects gazed at by a conspecific and, moreover, they exhibit considerably shorter choice reaction times for the same objects. These findings support the assumption of an evolutionarily old domain specific faculty shared within the primate order and they underline the potential value of marmosets in studies of normal and disturbed joint attention.
journal_name
Sci Repjournal_title
Scientific reportsauthors
Spadacenta S,Dicke PW,Thier Pdoi
10.1038/s41598-019-51783-9subject
Has Abstractpub_date
2019-10-25 00:00:00pages
15292issue
1issn
2045-2322pii
10.1038/s41598-019-51783-9journal_volume
9pub_type
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