What is masking cognitive psychology?
Masking is a term in perceptual experiments where a detectable stimulus (target stimulus) becomes undetectable by the presentation of a second stimulus (the masking stimulus) in close temporal or spatial proximity to it.
What is Metacontrast masking?
Metacontrast masking refers to the suppression of the visibility of a briefly flashed target stimulus by a similarly brief and spatially adjacent mask stimulus that follows the target in time at varying stimulus onset asynchronies (SOAs).
What is Dichoptic masking?
For brief presentations, sensitivity to a stimulus shown to one eye (the target stimulus) is reduced by an incompatible stimulus at the same location in the other eye (the mask). This is known as dichoptic masking (Legge, 1979).
What is pattern masking?
Pattern masking is psychophysical paradigm used to study the spatiotemporal properties of the human visual system. In a typical experiment, a target stimulus is detected in the presence of a masker stimulus.
What is masking in neurology?
In humans, a variety of neurological and psychiatric conditions alter the tendency to use facial signals. One of the main symptoms of Parkinson disease (PD) is diminished facial expressivity or “masked facies,” which refers to the expressionless appearance of individuals with the disorder.
What makes Metacontrast masking unique when compared to other types of masking?
Metacontrast masking uses a special type of masker and is distinguished from other types of masking in the pattern of results it generates. The target is often a small dot and the mask is an annulus that surrounds the dot. Each is presented very briefly (10-100 milliseconds).
What is forward and backward masking?
Forward masking refers to the masking of a tone by a sound that ends a short time (up to about 20 or 30 ms) before the tone begins. Backward masking refers to the masking of a tone by a sound that begins a few milliseconds after the tone has ended.
What is visual backward masking?
In cognitive psychology, visual backward masking involves presenting one visual stimulus (a “mask” or “masking stimulus”) immediately after a brief (usually 30 ms) “target” visual stimulus resulting in a failure to consciously perceive the first stimulus.
What is a masking experiment?
Visual masking is an experimental paradigm widely used in different domains of cognitive research such as studying preconscious processes (e.g., priming), neural correlates of consciousness, spatiotemporal limits of visual discrimination, perception-related endophenotypes associated with psychopathology, etc.
What does facial masking feel like?
With a masked face, there is often slowness and stillness in the muscles of the face. The primary thing I notice is less blinking and less reaction, positive or negative. However, when someone with a masked face is passionate about a story or topic, you can often see the most genuine and beautiful smile!
What is facial hypomimia?
One of these is reduced facial expression, also called hypomimia or facial masking. When the muscles of the face are stiff or take longer to move, it can be hard to crack a smile, raise your eyebrows or otherwise express your feelings using your face, which is an important part of how we communicate.