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In 1894 Goldscheider extended the intensive theory, proposing that each tactile nerve fiber can evoke three distinct qualities of sensation – tickle, touch and pain – the quality depending on the intensity of stimulation; and extended Naunyn's summation idea, proposing that, over time, activity from peripheral fibers may accumulate in the ...
In dentistry, the hydrodynamic or fluid movement theory is one of three main theories developed to explain dentine hypersensitivity, which is a sharp, transient pain arising from stimuli exposure. [1] It states that different types of stimuli act on exposed dentine, causing increased fluid flow through the dentinal tubules.
Neuro biomechanics is a field dedicated to the general study of human movement from various basic perspectives: musculo-skeletal functional anatomy, CNS and neuro-muscular physiology, physics, control theory with cybernetics and computer science. [1]
The threshold of pain or pain threshold is the point along a curve of increasing perception of a stimulus at which pain begins to be felt. It is an entirely subjective phenomenon. It is an entirely subjective phenomenon.
Combining early concepts derived from the specificity theory and the peripheral pattern theory, the gate control theory is considered to be one of the most influential theories of pain. This theory provided a neural basis which reconciled the specificity and pattern theories -- and ultimately revolutionized pain research.
The Gate Control Theory of Pain, first proposed in the 1960s by Melzack and Wall, states that the concurrent activation of tactile afferent nerve fibers inhibits activation of nociceptive afferent fibres. [1] Melzack and Wall suggested that a gating mechanism is present in the dorsal horn of the spinal cord.
Spasmodic torticollis is an extremely painful chronic neurological movement disorder causing the neck to involuntarily turn to the left, right, upwards, and/or downwards. The condition is also referred to as "cervical dystonia". Both agonist and antagonist muscles contract simultaneously during dystonic movement. [1]
[9] [10] This occurs ~2 1/2 months following injury, without associated neurological symptoms or pain, and typically resolves within 1 year. [ citation needed ] This sign is also sometimes seen as part of a " discontinuation syndrome " associated with certain psychotropic medications, such as selective serotonin reuptake inhibitors and ...