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For example, to compare performance in the left to performance in the right visual fields, studies confine some or all the moving objects to one of the visual fields. [3] To avoid any contribution from spatial interference among mental object representations, some studies maintain a minimum distance between objects. [ 4 ]
This method was used in the first, 1995, experiment. A change is made in an image at the same time as the image is moved in an unpredictable direction, forcing a saccade. This method mimics eye movements and can detect change blindness without introducing blank screens, masking stimuli or mudsplashes. [10]
The amount of time readers or participants of letter detection tasks take to process a word, dictates the occurrence of letter detection errors and the missing letter effect. [4] The increase of processing time denotes the decrease of letter detection errors and the decrease of processing time follows as a result of an increase in word ...
Under the influence of signal detection theory, absolute threshold has been redefined as the level at which a stimulus will be detected a specified percentage (often 50%) of the time. [1] The absolute threshold can be influenced by several different factors, such as the subject's motivations and expectations, cognitive processes, and whether ...
Method of constant stimuli: Stimuli of varying intensities are presented in random order to a subject. Intensities involve stimuli which are surely subthreshold and stimuli which are surely supra-threshold. For the creation of the series, the approximate threshold judged by a simpler method (i.e.: by the method of limits).
Visual object recognition refers to the ability to identify the objects in view based on visual input. One important signature of visual object recognition is "object invariance", or the ability to identify objects across changes in the detailed context in which objects are viewed, including changes in illumination, object pose, and background context.
In the branch of experimental psychology focused on sense, sensation, and perception, which is called psychophysics, a just-noticeable difference or JND is the amount something must be changed in order for a difference to be noticeable, detectable at least half the time. [1]
There are processing limits to the brain in the execution of complex tasks like object recognition. All parts of the brain cannot process at full capacity in a parallel method. Attention controls the allocation of resources to the tasks. To work efficiently, attention must be guided from object to object. [17]