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Lesions or ablation in psychology or an ablation experiment or lesion experiment is the removal of tissue to explore its function and was a basic research methodology in physiological psychology in the earlier part of the 20th century. The approach was refined in 1824 by Marie Jean Pierre Flourens, a French physiologist.
Ablative brain surgery
Ablative brain surgery is the surgical ablation by burning or freezing of brain tissue to treat neurological or psychological disorders. The lesions it causes are irreversible.
Ablative brain surgery is also often used as an research tool in neurobiology. For example, by ablating specific brain regions and observing differences in animals subjected to behavioral tests, the functions of the removed areas may be inferred.
Medicine
In medicine, ablation is the same as removal of a part of biological tissue, usually by surgery. The American Heritage Stedman's Medical Dictionary defines ablation as "Removal of a body part or the destruction of its function, as by a surgery, disease, or noxious substance." [1]
Where full removal of an organ or structure has taken place the term extirpation is used
see also