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Tactile hallucination is the false perception of tactile sensory input that creates a hallucinatory sensation of physical contact with an imaginary object. [1] It is caused by the faulty integration of the tactile sensory neural signals generated in the spinal cord and the thalamus and sent to the primary somatosensory cortex (SI) and secondary ...
Tactile hallucinations are the illusion of tactile sensory input, simulating various types of pressure to the skin or other organs. One subtype of tactile hallucination, formication , is the sensation of insects crawling underneath the skin and is frequently associated with prolonged cocaine use. [ 41 ]
Ernest Dupré (1862-1921), French psychiatrist and coiner of the term Cenestopathy alongside Albert Camus. Cenesthopathy (from French: cénestopathie, [1] formed from the Ancient Greek κοινός (koinós) "common", αἴσθησῐς (aísthēsis) "feeling", "perception" + πᾰ́θος (páthos) "feeling, suffering, condition"), also known as coenesthesiopathy, [2] is a rare psychiatric ...
Unlike a hallucination, which is a distortion in the absence of a stimulus, an illusion describes a misinterpretation of a true sensation. For example, hearing voices regardless of the environment would be a hallucination, whereas hearing voices in the sound of running water (or another auditory source) would be an illusion.
Articles relating to hallucinations, perceptions in the absence of an external stimulus that have the qualities of real perceptions. Hallucinations are vivid, substantial, and are perceived to be located in external objective space. Hallucinations are a combination of 2 conscious states of brain wakefulness and REM sleep.
Within psychological testing, the Scale for the Assessment of Positive Symptoms (SAPS) is a rating scale to measure positive symptoms in schizophrenia.The scale was developed by Nancy Andreasen and was first published in 1984. [1]
Hypnopompia (also known as hypnopompic state) is the state of consciousness leading out of sleep, a term coined by the psychical researcher Frederic Myers.Its mirror is the hypnagogic state at sleep onset; though often conflated, the two states are not identical and have a different phenomenological character.
Merkel cells, also known as Merkel–Ranvier cells or tactile epithelial cells, are oval-shaped mechanoreceptors essential for light touch sensation and found in the skin of vertebrates. They are abundant in highly sensitive skin like that of the fingertips in humans , and make synaptic contacts with somatosensory afferent nerve fibers .