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t 1 and t 2 are times when the impulse begins and ends, respectively, m is the mass of the object, v 2 is the final velocity of the object at the end of the time interval, and; v 1 is the initial velocity of the object when the time interval begins. Impulse has the same units and dimensions (MLT −1) as momentum.
If the objects of a display are not sufficiently widely spaced, the objects are difficult to identify and select with attention due to spatial crowding, which can prevent tracking. [4] [11] High object speeds have a similar effect—faster objects are harder to track, and humans are completely unable to track objects that move sufficiently fast ...
In other words, upon viewing an object getting progressively lighter and asked to remember the final shade, participants accept a darker version of the object (where a representational momentum parallel would be to accept a lighter shade). One suggestion for this difference is that memory is playing more of a role in determining color. [22]
The motion direction of a contour is ambiguous, because the motion component parallel to the line cannot be inferred based on the visual input. This means that a variety of contours of different orientations moving at different speeds can cause identical responses in a motion sensitive neuron in the visual system.
The sensory enhancement theory assumes that attentional resources will spread until they reach the boundaries of a cued object, [1] [2] including regions that may be obstructed or are overlapping other objects. [3] [4] It has been suggested that sensory enhancement is an essential mechanism that underlies object-based attention.
In order that I may do full justice to two esteemed friends, I beg to state, in connection with this term monoideo-dynamics, that, several years ago, Dr. W. B. Carpenter introduced the term ideo-motor to characterise the reflex or automatic muscular motions which arise merely from ideas associated with motion existing in the mind, without any ...
Research into object-based attention suggests that attention improves the quality of the sensory representation of a selected object, and results in the enhanced processing of that object’s features. [2] The concept of an ‘object’, apropos object-based attention, entails more than a physical thing that can be seen and touched.
Feature integration theory is a theory of attention developed in 1980 by Anne Treisman and Garry Gelade that suggests that when perceiving a stimulus, features are "registered early, automatically, and in parallel, while objects are identified separately" and at a later stage in processing.