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In physiology, the all-or-none law (sometimes the all-or-none principle or all-or-nothing law) is the principle that if a single nerve fibre is stimulated, it will always give a maximal response and produce an electrical impulse of a single amplitude. If the intensity or duration of the stimulus is increased, the height of the impulse will remain the same. The nerve fibre either gives a maximal response or none at all. It was first established by the American physiologist Henry Pickering Bowditch in 1871 for the contraction of heart muscle.

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  • Alles-oder-nichts-Gesetz (de)
  • All-or-none law (en)
  • 全か無かの法則 (ja)
  • 全有全無律 (zh)
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  • Das Alles-oder-nichts-Gesetz bezeichnet das Phänomen, dass eine Reaktion auf einen Reiz entweder vollständig oder überhaupt nicht ausgelöst wird. Es gibt also einen Schwellenwert, der überschritten werden muss, um die Reaktion auszulösen. An dem Parameter Stärke der Reaktion ist keine Abstufung (Differenzierung) zu beobachten, denn die Reaktion auf den Reiz erfolgt immer mit maximaler Stärke. Wie stark der Reiz schlussendlich war, kann man nur an der Frequenzierung der Reaktionskurve erkennen. (de)
  • 全か無かの法則(ぜんかむかのほうそく、英: all-or-none principle, all-or-none law)とは刺激の強さと反応の大きさに関する法則であり、悉無律(しつむりつ)、全か無の法則(ぜんかむのほうそく)とも呼ばれる。 (ja)
  • 全有全無律(英語:all-or-none law)是骨骼肌或心肌的肌纤维或是神经反应独立於刺激的强度。如果刺激超过閾電位,神经或肌纤维就會有對應反应;否则,就完全不會有反应。 全有全無律最早是在1871年由美國生理學家針對心肌的收缩所提出的。他描述刺激和反应的關係如下: 「感應的衝擊會依照其刺激強度而收縮或是不收縮。若它有收縮,就會以該條件下有刺激時會產生的最大收縮強度而收縮。」 個別骨骼肌和神經的纤维會依全有全無律而運作。 (zh)
  • In physiology, the all-or-none law (sometimes the all-or-none principle or all-or-nothing law) is the principle that if a single nerve fibre is stimulated, it will always give a maximal response and produce an electrical impulse of a single amplitude. If the intensity or duration of the stimulus is increased, the height of the impulse will remain the same. The nerve fibre either gives a maximal response or none at all. It was first established by the American physiologist Henry Pickering Bowditch in 1871 for the contraction of heart muscle. (en)
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  • In physiology, the all-or-none law (sometimes the all-or-none principle or all-or-nothing law) is the principle that if a single nerve fibre is stimulated, it will always give a maximal response and produce an electrical impulse of a single amplitude. If the intensity or duration of the stimulus is increased, the height of the impulse will remain the same. The nerve fibre either gives a maximal response or none at all. It was first established by the American physiologist Henry Pickering Bowditch in 1871 for the contraction of heart muscle. An induction shock produces a contraction or fails to do so according to its strength; if it does so at all, it produces the greatest contraction that can be produced by any strength of stimulus in the condition of the muscle at the time. This principle was later found to be present in skeletal muscle by Keith Lucas in 1909. The individual fibres of nerves also respond to stimulation according to the all-or-none principle. (en)
  • Das Alles-oder-nichts-Gesetz bezeichnet das Phänomen, dass eine Reaktion auf einen Reiz entweder vollständig oder überhaupt nicht ausgelöst wird. Es gibt also einen Schwellenwert, der überschritten werden muss, um die Reaktion auszulösen. An dem Parameter Stärke der Reaktion ist keine Abstufung (Differenzierung) zu beobachten, denn die Reaktion auf den Reiz erfolgt immer mit maximaler Stärke. Wie stark der Reiz schlussendlich war, kann man nur an der Frequenzierung der Reaktionskurve erkennen. (de)
  • 全か無かの法則(ぜんかむかのほうそく、英: all-or-none principle, all-or-none law)とは刺激の強さと反応の大きさに関する法則であり、悉無律(しつむりつ)、全か無の法則(ぜんかむのほうそく)とも呼ばれる。 (ja)
  • 全有全無律(英語:all-or-none law)是骨骼肌或心肌的肌纤维或是神经反应独立於刺激的强度。如果刺激超过閾電位,神经或肌纤维就會有對應反应;否则,就完全不會有反应。 全有全無律最早是在1871年由美國生理學家針對心肌的收缩所提出的。他描述刺激和反应的關係如下: 「感應的衝擊會依照其刺激強度而收縮或是不收縮。若它有收縮,就會以該條件下有刺激時會產生的最大收縮強度而收縮。」 個別骨骼肌和神經的纤维會依全有全無律而運作。 (zh)
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