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2016 ; 11
(3
): e0149431
Nephropedia Template TP
gab.com Text
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Our Faces in the Dog s Brain: Functional Imaging Reveals Temporal Cortex
Activation during Perception of Human Faces
#MMPMID26934715
Cuaya LV
; Hernández-Pérez R
; Concha L
PLoS One
2016[]; 11
(3
): e0149431
PMID26934715
show ga
Dogs have a rich social relationship with humans. One fundamental aspect of it is
how dogs pay close attention to human faces in order to guide their behavior, for
example, by recognizing their owner and his/her emotional state using visual
cues. It is well known that humans have specific brain regions for the processing
of other human faces, yet it is unclear how dogs' brains process human faces. For
this reason, our study focuses on describing the brain correlates of perception
of human faces in dogs using functional magnetic resonance imaging (fMRI). We
trained seven domestic dogs to remain awake, still and unrestrained inside an MRI
scanner. We used a visual stimulation paradigm with block design to compare
activity elicited by human faces against everyday objects. Brain activity related
to the perception of faces changed significantly in several brain regions, but
mainly in the bilateral temporal cortex. The opposite contrast (i.e., everyday
objects against human faces) showed no significant brain activity change. The
temporal cortex is part of the ventral visual pathway, and our results are
consistent with reports in other species like primates and sheep, that suggest a
high degree of evolutionary conservation of this pathway for face processing.
This study introduces the temporal cortex as candidate to process human faces, a
pillar of social cognition in dogs.