Awake fMRI Reveals Brain Regions for Novel Word Detection in Dogs

@article{Prichard2018AwakeFR,
  title={Awake fMRI Reveals Brain Regions for Novel Word Detection in Dogs},
  author={Ashley Prichard and Peter F Cook and Mark Spivak and Raveena Chhibber and Gregory S. Berns},
  journal={Frontiers in Neuroscience},
  year={2018},
  volume={12}
}
How do dogs understand human words? At a basic level, understanding would require the discrimination of words from non-words. To determine the mechanisms of such a discrimination, we trained 12 dogs to retrieve two objects based on object names, then probed the neural basis for these auditory discriminations using awake-fMRI. We compared the neural response to these trained words relative to “oddball” pseudowords the dogs had not heard before. Consistent with novelty detection, we found greater… 
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References

SHOWING 1-10 OF 65 REFERENCES
Awake fMRI reveals a specialized region in dog temporal cortex for face processing
TLDR
FMRI findings provide the first evidence for a face-selective region in the temporal cortex of dogs, which cannot be explained by simple low-level visual feature extraction; reveal that neural machinery dedicated to face processing is not unique to primates; and reveal dogs’ exquisite sensitivity to human social cues.
Our Faces in the Dog's Brain: Functional Imaging Reveals Temporal Cortex Activation during Perception of Human Faces
TLDR
The temporal cortex is introduced as a candidate to process human faces, a pillar of social cognition in dogs, and 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.
Reversing the Standard Neural Signature of the Word–Nonword Distinction
TLDR
In two fMRI experiments, a different set of findings emerged when word stimuli were used that were less familiar (measured by word frequency) than those typically used, suggesting that functional neuroimaging correlates of semantic processing are less stable than previously assumed.
An event-related fMRI study of visual and auditory oddball tasks
TLDR
The results support the hypothesis that target detection and novelty processing are associated with neural activation in widespread neural areas, suggesting that the brain seems to adopt a strategy of activating many potentially useful brain regions despite the low probability that these brain regions are necessary for task performance.
Neural mechanisms for lexical processing in dogs
TLDR
Using functional magnetic resonance imaging, this work explored whether and how dog brains segregate and integrate lexical and intonational information and found a hemispheric bias for processing meaningful words, independently of intonation.
The functional neuroanatomy of target detection: an fMRI study of visual and auditory oddball tasks.
The neuronal response patterns that are required for an adequate behavioural reaction to subjectively relevant changes in the environment are commonly studied by means of oddball paradigms, in which
...
...