28th International Congress of Psychology August 8 ... - U-netSURF

without-contour and with-same-contour, the recognition rate of without-contour is the lowest. The
results indicate that the house with distinctive feature eliminates inversion effect, and that human
face is holistic, and that content and contour of face all influence recognition rate.
1063.37 Object recognition: Contribution of categorical and coordinate spatial, Ayako Saneyoshi,
Chikashi Michimata, Sophia University, Japan
Participants were asked to judge whether two stimuli that presented sequentially were same or
different. In different condition, the spatial relation of the object parts was systematically changed
to facilitate categorical or coordinate spatial encoding. In half of the trials, stimuli were rotated in
depth so that their view has been changed. It was found that when the stimulus was rotated,
coordinate change became very difficult to detect whereas detecting the categorical change was
relatively unaffected.
1063.38 How does the difference in perceptual dimension, “brightness” versus, Midori
Takashima, Kaoru Noguchi, Nihon University Japan
Under the conditions in which “brightness” and “lightness” were separately presented, participants
judged the appearance of the background by the method of relative rating scale (Helson, 1964).
When the figure area was white-appearing, and was more susceptible to the change in illuminance,
participants made judgments of “lightness" more easily and likely to report contrast in stead of
assimilation. From this finding together with Kanizsa (1979), we can say that naive observers tend
to make” lightness” judgments which are actually not distinguished from “brightness”.
1063.39 A functional MRI study on visual feature binding, Zhaoxin Wang 1 , XiangChuan
Chen 1 , Daren Zhang 1 , Sheng He 2 , Alex Holcombe 3 , 1 University of Science and Technology of
China, HeFei, China; 2 University of Minnesota, USA
Functional magnetic resonance imaging (fMRI) was employed to elucidate the brain areas
involved in visual feature binding. BOLD signal changes in these areas binding related were
measured at different flickering rate for two binding tasks (a superimposed one and a separated
one) respectively. The results showed that same network of cortical areas was activated by both
binding tasks, but some areas in this network showed the rate effect only in the separated
condition but not in the superimposed condition. These results suggest that different neural
mechanisms may specifically underlie the early and late visual feature binding respectively.
1063.40 Perceptual memory of an object’s features, Cheng-Ta Yang, Yei-Yu Yeh, National
Taiwan University, China
We investigate whether all the features are encoded and retained as people attend to an object.
Perceptual memory of four features in color, orientation, shape, and texture were tested. The
duration of reference stimuli were manipulated in Experiment 1, and the results show that all the
features were encoded but at different speeds. In Experiment 2, participants were required to
attend to one feature of the reference stimuli and ignore the others. The attended feature and the
manner that distractors differ from the reference targets were manipulated. The results showed the
effects of top-down control and bottom-up processes.
1063.41 Characters can be selected in visual sensory memory by characteristics based on speech,
122