Facilitation

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Facilitation

 

in physiology, the intensification of a response to a simultaneous or preliminary stimulation of different parts of the same or another area or the sensory nerve fibers proceeding from the receptor. In facilitation based on an increase in excitability, a single stimulation increases the efficacy of a subsequent stimulation by paving the way for it. One stimulation thus facilitates another (hence the origin of the term). As a result of facilitation, subliminal stimulation, which by itself does not elicit a response, begins to have an effect when excitation develops in new focal centers. For example, the weak stimulation of the skin of a rabbit, insufficient to elicit a motor response, provokes a reflex upon the simultaneous electrical stimulation of the motor center of the brain’s cortex, which also does not produce an effect by itself. The concept of facilitation in the central nervous system was introduced in 1882 by the German physiologist S. Exner, who called the phenomenon Bahnung (German; “facilitation”). I. P. Pavlov noted that facilitation contributes to the formation of conditioned reflexes. If a temporary connection is established, facilitation occurs between two foci of excitation in the cortex of the cerebral hemispheres as a reaction to conditioned and unconditioned stimuli.

References in periodicals archive ?
Finally, it has been demonstrated that Kabat's PNF physiotherapeutic techniques sufficiently increase the tension of the vascular friction stimulus to increase the capacity of transport of the L-arginine (L-Arg), which is the precursor of the NO molecule, and they also increase the activity and expression of the nitric oxide synthase.
The PNF protocol used in this study led to improvements in all the EFAP subtasks and consequently overall functional ambulation.
From the nationalist side, the PNF emphasized that the PLO was the sole representative of the Palestinian people.
PNF techniques have broad applications in treating people with neurologic and musculoskeletal conditions, most frequently in rehabilitating the knee, shoulder, hip and ankle (Surburg, Schrader, 1997).
The key finding from the current study was the significant increase in agonist muscle performance during the SR exercise after contract-relax PNF stretching on antagonist muscles (shoulder adductors) compared to the TP.
02:12:02: The PF said, "I don't have any more indications," and the PNF said, "we have no valid indications.
In his welcome address, Pakistan Fleet Commander Rear Admiral Muhammad Amjad Khan Niazi highlighted the operational achievements of the PNF and presented a list of the activities undertaken by the fleet during the year.
KUALA LUMPUR -- Mudassar Arain, President, PNF has informed that 5th day of Asian Men's Netball Championship 2017, the following matches were played for 3rd Position and Grant Final Match.
The Pakistan contingent is consisted 17 members and the PNF nominated Mohammad Akhtar as "Team Captain" while Samad Masood nominated as Vice Captain, the team details are as under: