VSS 2013 note

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.