16.538 Xu et al.
used bubble technique to construct adapting stimuli of partial revealed faces.
After adaptation, they tested the categorization performance on a series of
morphs of two facial expressions. They showed that the shift of the
psychometric function was greatest following the whole face adaptation, weaker
for mouth-only, followed non-mouth features. This showed that features around
mouth is important for facial expression categorization.
21.22 The authors
showed that there is an individual difference in the strength of the tilt
illusion induced by oriented flankers. They used fMRI and DCM to find effective
connectivity between foveal and peripheral regions (i.e., target and surround
regions in a tilt illusion display) in
V1. They showed that there is a correlation between periphery-to-fovea
connectivity and the strength of tilt illusion.
25.14 Starting with
a replication of Hansen & Gengenfurtner (2013) noise masking data which
showed a very narrowed tuned threshold elevation function, Esker tried to argue
that these highly specific masking can be explained by adding one extra channel
to the traditional three-channel opponent color model with a nonlinearity
rather than a model of sixteen classes proposed by Gengenfurtner.
32.16 In shape-from
shading, the change of luminance signals a change in 3D shape. In this study,
the authors shows that the 3D percept can be eliminated when there is a color
gradient coincident with the luminance gradient. The percept of the 3D shape, however,
is not change by a color gradient that is inconsistent with the luminance
gradient.
[CC]: My cue
combination stimulus may be a better tool to explore this phenomenon.
33.530
The experiment
stimuli were blurred faces. The participants used a mouse to control which part
of face will be revealed while doing expression identification task. The
authors showed that the participants spend more time
On the left-side of
the face image.
[CC]: This study still has not solved the issue
whether it is left-side visual field advantage or left-side face
advantage. To resolve this issue, one do
need to put the stimuli to the periphery to see whether the effect is still
there.
33.536
Here, the authors applied Dakin & Watt's
bar code theory for face identity to facial expression. They found
inconsistence results. The horizontal information is essential for some types f
expressions but not all.
34.24 typical
likelihood theory of cue combination explains the edge location from disparity
and luminance well.
35.25 Crowding
occurs only when the target and the flanker are similar to each other.
35.28 Landy
suggested that nonlinear pooling from a bunch of first-order filters are
important to explain the discrimination performance for orientation -contrast
pattern.
[cc]: His conclusion
is similar to what we suggested in a recently submitted paper (and Landy is the
editor). Stay tuned.
43.406 The authors
used the flanker effect stimuli. They showed that the N100 (actually, near
150ms) of P1 ERP reduced when there was a difference between the target and the
flanker orientation; or, when a square appears to make the target and the
flanker the same group.
42.24 The authors
used MVPC to compare fMRI responses to famous faces and the name of these
famous people. They found that superior IPS showed identity specific responses
while VWFA and FFA respond equally to different identity.
43.421 It is
suggested that person with autism tend to focus on local detail of a visual
stimulus and ignore the global pattern. The authors measure the pRF of the
individuals with autism. They actually got an opposite effect that the pRF of
autism people in V2 and V3 are actually greater than that of normal
control.
[CC: Actually, not only this presentation, many
presentations of this section studied the local/global percept of the people
with autism. Since perceptual grouping is the main focus of my lab, many of our
research works should be helpful to this topic. ]
55.25 Kriegeskorte
showed that there is a regular mapping of face features in OFA just like
retinotopic mapping in V1.
55.27 Failure of
fixation control, though has little, if any, effect, on behavior measurement,
it has a statistically significant effect on N170 of ERP.
61.26 Ebbinghaus
illusion has different effect ondifferent states of Schizophrenia. Some
Schizophrenia has a weaker Ebbinghaus illusion, while the other has a stronger
illusion than the normal control.
