Track topics on Twitter Track topics that are important to you
We investigated the effect of reduced contrast on speed perception for two types of tasks: (a) the speed of a rotating image, an example of "object-motion," and (b) speed of travel when viewing wide-screen videos recorded from inside a car, an example of "self-motion." Both types of stimuli were presented over a range of spatial contrasts. The results showed that reduced contrast caused significant decreases of perceived speed for the rotating disk, replicating the well known Thompson Effect. Reduced contrast had inconsistent effects on perceived speed of self-motion, however, resulting in perception of faster self-motion at the lowest speed, slower self-motion at higher speeds, and no effect at intermediate speed. Although further research is needed, the differential effects of reduced contrast on perceived speed of object-motion vs. self-motion are consistent with evidence for two modes of vision.
This article was published in the following journal.
Name: Consciousness and cognition
Unconscious visual stimuli can affect conscious perception: For example, an invisible prime can affect responses to a subsequent target. The invisible interpretation of an ambiguous figure can have si...
Does the preference for visual speed extend to motion perception when the eye moves? Current evidence from psychophysics and neuroscience is limited to small patches of image motion and stationary fix...
The relationship between eye movements and subjective perception is still relatively poorly understood. In this study, participants tracked the movement of a Gabor patch and made perceptual judgments ...
Human sensitivity to speed differences is very high, and relatively high when one has to compare the speed of an object that disappears behind an occluder with a standard. Nevertheless, different spee...
The sensory signals generated by self-motion are complex and multimodal, but the ability to integrate these signals into a unified self-motion percept to guide navigation is essential for animal survi...
Is the ability to perceive motion altered by diabetes? The investigators are measuring motion perception using a technique called vestibular thresholds. Subjects will undergo 3 hours of te...
The aim of the study was to develop a low cost, clinically easy to use measurement method with the Leap motion sensor for objectively evaluating range of motion (ROM), and to investigate t...
Pain pressure measurements, fine wire EMG and real time imaging ultrasound will be used to determine the relationships between motion, pain perception, and mobility in the glenohumeral joi...
Many surgeons pursue volar plating of the distal radius to allow earlier post-operative wrist motion. Early motion is generally prescribed in the belief that it will result in greater fin...
A novel magnetic resonance (MR) compatible accelerometer for respiratory motion sensing (MARMOT) has been developed as a surrogate of the vendors' pneumatic belts. The aim is to model and ...
Motion of an object in which either one or more points on a line are fixed. It is also the motion of a particle about a fixed point. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed)
Disorder caused by motion, as sea sickness, train sickness, car sickness, air sickness, or SPACE MOTION SICKNESS. It may include nausea, vomiting and dizziness.
Physical motion, i.e., a change in position of a body or subject as a result of an external force. It is distinguished from MOVEMENT, a process resulting from biological activity.
The real or apparent movement of objects through the visual field.
The art, technique, or business of producing motion pictures for entertainment, propaganda, or instruction.