Bernal S D_2010.pdf - University of Plymouth

5..1, FEEDBACK TO S3: ATTENTION AN/J PRIMING
5.3 Feedback to S3: attention and priming
Figure 5.33 shows Lhe model S3 belief response to an input image where a lamp occludes a
dog. given two differeni S3 priors, 7r(53): an equiprobahle or ilal distribmion and a biased
distribution where the prior probability of objects that are animals has been doubled.
TT(S3)
BeKS3)
Prefrontal cortex, Fusiform gyrus,
Posterior parietal cortex, Amygdala ?
Flat prior
Input image
Prior biased towards animals
(priming, attention, etc.)
Figure 5.33: Comparison of S3 belief response lo an inpul image coniaining a lamp occluding
a clog, given two differeni S3 priori, ;r(,V3j: an liquipmbahle or fla! disiribuiion
and a biased distribution where the prior probability of objects thai are animals
has been doubled. The S3 prior is hypoihcsi/ed to originate from regions outside
of the ventral paihway. For ilie Ilal S3 prior ihe winner object in the .S3 belief
is Ihe lamp, but for the biased prior where Ihe animal objects are favoured, ihe
winner objeci is the dog.
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