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  2. Jerk (physics) - Wikipedia

    en.wikipedia.org/wiki/Jerk_(physics)

    Jerk (also known as jolt) is the rate of change of an object's acceleration over time. It is a vector quantity (having both magnitude and direction). Jerk is most commonly denoted by the symbol j and expressed in m/s 3 ( SI units ) or standard gravities per second ( g 0 /s).

  3. Defence mechanism - Wikipedia

    en.wikipedia.org/wiki/Defence_mechanism

    While the two concepts share multiple similarities, there is a distinct difference between them that depends on the state of consciousness the process is carried out in. The process of coping involves using logic and reason to stabilize negative emotions and stressors. This differs from defence, which is driven by impulse and urges. [32] [33]

  4. Jaw jerk reflex - Wikipedia

    en.wikipedia.org/wiki/Jaw_jerk_reflex

    The jaw jerk reflex or the masseter reflex is a stretch reflex used to test the status of a patient's trigeminal nerve (cranial nerve V) and to help distinguish an upper cervical cord compression from lesions that are above the foramen magnum.

  5. Transcutaneous electrical nerve stimulation - Wikipedia

    en.wikipedia.org/wiki/Transcutaneous_electrical...

    A transcutaneous electrical nerve stimulation (TENS or TNS) is a device that produces mild electric current to stimulate the nerves for therapeutic purposes.TENS, by definition, covers the complete range of transcutaneously applied currents used for nerve excitation, but the term is often used with a more restrictive intent, namely, to describe the kind of pulses produced by portable ...

  6. Summation (neurophysiology) - Wikipedia

    en.wikipedia.org/wiki/Summation_(neurophysiology)

    Basic ways that neurons can interact with each other when converting input to output. Summation, which includes both spatial summation and temporal summation, is the process that determines whether or not an action potential will be generated by the combined effects of excitatory and inhibitory signals, both from multiple simultaneous inputs (spatial summation), and from repeated inputs ...

  7. Body-focused repetitive behavior - Wikipedia

    en.wikipedia.org/wiki/Body-focused_repetitive...

    Body-focused repetitive behavior (BFRB) is an umbrella name for impulse control [1] behaviors involving compulsively damaging one's physical appearance or causing physical injury. [2] Body-focused repetitive behavior disorders (BFRBDs) in ICD-11 is in development. [3] BFRB disorders are currently estimated to be under the obsessive-compulsive ...

  8. Sublimation (psychology) - Wikipedia

    en.wikipedia.org/wiki/Sublimation_(psychology)

    Sigmund Freud, 1926. In psychology, sublimation is a mature type of defense mechanism, in which socially unacceptable impulses or idealizations are transformed into socially acceptable actions or behavior, possibly resulting in a long-term conversion of the initial impulse.

  9. Hypnic jerk - Wikipedia

    en.wikipedia.org/wiki/Hypnic_jerk

    A hypnic jerk, hypnagogic jerk, sleep start, sleep twitch, myoclonic jerk, or night start is a brief and sudden involuntary contraction of the muscles of the body which occurs when a person is beginning to fall asleep, often causing the person to jump and awaken suddenly for a moment.