- tactile polyaesthesia
- Also known as palihaptic phenomenon, palinaesthesia, and perseverative somaesthetic sensation. The term tactile polyaesthesia comes from the Latin verb tangere (to touch), and the Greek words polus (much, many), and aisthanesthai (to notice, to perceive). It is used to denote an illusory tactile phenomenon in which a single tactile stimulus is at first perceived and localized properly, and then perceived again, a few seconds later, in one or more different parts of the body. The Austrian-American neurologist Paul Ferdinand Schilder (1886-1940) gives the example of a woman who, when touched on the right side near the breast, perceives the stimulus successively on the shoulder, near the elbow, on the upper part of the leg, and on the foot, whereby the duration of the intervals between these various tactile sensations is of the order of seconds. Pathophysiologically, tactile polyaesthesia is associated primarily with discrete lesions affecting the parietal cortex. Conceptually, the phenomenon is analogous to *palinopsia (i.e. the persistence or recurrence of visual images), and * palinacusis (i.e. the persistence or paroxysmal recurrence of auditory percepts). Tactile polyaes-thesia tends to be classified as a * reduplicative phenomenon.ReferencesCritchley, M. (1953). The parietal lobes. London: Edward Arnold & Co.Head, H., Holmes, G. (1911). Sensory disturbances from cerebral lesions. Brain, 34, 102-254.Schilder, P. (1923). Das Körperschema. Ein Beitrag zur Lehre vom Bewusstsein des eigenen Körpers. Berlin: Verlag von Julius Springer.
Dictionary of Hallucinations. J.D. Blom. 2010.
Look at other dictionaries:
tactile hallucination — Also known as tactile phantasma, haptic hallucination, touch hallucination, and hallucination of touch. The term tactile hallucination is indebted to the Latin verb tangere, which means to touch. It refers to a bodily sensation seemingly… … Dictionary of Hallucinations
polyaesthesia — see tactile polyaesthesia … Dictionary of Hallucinations
palinopsia — Also referred to as pseudodiplopia. The term palinopsia comes from the Greek words palin (again) and opsis (seeing). It translates as seeing again or seeing multiple identical copies . The original term for this group of visual phenomena was * … Dictionary of Hallucinations
palinacusis — Also known as palinacousis and auditory perseveration. The term palinacusis comes from the Greek words palin (again) and akouein (to hear). It refers to a rare symptom involving the persistence or paroxysmal recurrence of auditory percepts,… … Dictionary of Hallucinations
palihaptic phenomenon — see tactile polyaesthesia … Dictionary of Hallucinations
palinaesthesia — see tactile polyaesthesia … Dictionary of Hallucinations
perseverative somaesthetic sensation — see tactile polyaesthesia … Dictionary of Hallucinations
reduplicative phenomenon — The term reduplicative phenomenon is indebted to the Latin noun reduplicare, which means to double. It is used as an umbrella term for a group of illusory perceptual phenomena characterized by the perseveration, reduplication, or reoccurrence… … Dictionary of Hallucinations