Acceleration carries the local inversion effect in biological motion perception
نویسندگان
چکیده
منابع مشابه
Acceleration carries the local inversion effect in biological motion perception.
The ability to derive the facing direction of a spatially scrambled point-light walker relies on the motions of the feet and is impaired if they are inverted. We exploited this local inversion effect in three experiments that employed novel stimuli derived from only fragments of full foot trajectories. In Experiment 1, observers were presented with stimuli derived from a single fragment or a pa...
متن کاملThe local inversion effect in biological motion perception is acceleration-based
The local inversion effect in biological motion perception is acceleration-based. The ability to discriminate direction from spatially scrambled point-light displays relies on the orientation of the foot dot motions (Troje & Westhoff, 2006). We present two experiments that investigated this local motion-based inversion effect by testing direction discrimination from novel biological motion disp...
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Replacing the local dots of point-light walkers with complex images leads to significant detriments to performance in biological motion detection and discrimination tasks. This detriment has previously been shown to be larger when the local elements match the global shape in object category and facing direction. In contrast, studies using Navon stimuli have demonstrated that local interference ...
متن کاملThe Inversion Effect in Biological Motion Perception: Evidence for a “Life Detector”?
If biological-motion point-light displays are presented upside down, adequate perception is strongly impaired. Reminiscent of the inversion effect in face recognition, it has been suggested that the inversion effect in biological motion is due to impaired configural processing in a highly trained expert system. Here, we present data that are incompatible with this view. We show that observers c...
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A vivid perception of the moving form of a human figure can be obtained from a few moving light points on the joints of the body. This is known as biological motion perception. It is commonly believed that the perception of biological motion rests on image motion signals. Curiously, however, some patients with lesions to motion processing areas of the dorsal stream are severely impaired in imag...
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ژورنال
عنوان ژورنال: Journal of Vision
سال: 2009
ISSN: 1534-7362
DOI: 10.1167/9.1.19