Double dissociation refers to a logical progression of scientific assumptions in localizing functional areas in the brain. For example, if symptom A appears with lesions in brain str ucture X, but not with those in Y, and symptom B appears with lesions of Y, but not of X, then those specific areas of the brain each have a specific function.

In brain damage, when function A is present and function B is absent in one person, and function A is absent and function B is present in another. Presence of a double dissociation means that the two functions involve different mechanisms and operate independently of one another.

Moreover, Double dissociation is the finding that some individuals usually brain damaged perform normally on task A and poorly on task B, whereas others show the opposite pattern.

Related Articles

Orbitofrontal cortex at■■■■■■
Orbitofrontal cortex (OFC) refers to ab area in the frontal lobe, near the eyes, that receives signals . . . Read More
Performance contingency at■■■■■■
Performance contingency is a concept in psychology that refers to the conditions or situations where . . . Read More
Biofeedback at■■■■■■
Biofeedback refers to provision of information to a person regarding one or more physiological processes . . . Read More
Cortex at■■■■■
Cortex is defined as the outermost and largest part of the human brain In psychology, the cortex is the . . . Read More
Ataxia at■■■■■
Ataxia refers to the inability to maintain normal postures and perform normal movements. Movements are . . . Read More
Selectivity at■■■■■
Selectivity in the psychology context refers to the process or capacity of focusing attention or cognitive . . . Read More
Hallucinatory at■■■■■
Hallucinatory refers to anything related to or characterized by hallucinations. Hallucinations are perceptual . . . Read More
Cluster at■■■■■
A cluster typically refers to a group of similar things or people aggregated together, often used to . . . Read More
Psychomotor at■■■■■
Psychomotor refers to the connection between cognitive functions and physical movement. In the psychology . . . Read More
Aspirin at■■■■■
Aspirin is not typically discussed in the context of psychology, as it is primarily known as a medication . . . Read More