Critical fusion frequency

For example, when we see a flashing light, if the flashing period is short enough, we no longer feel it flashing, but rather perceive it as a continuous light of uniform brightness. The minimum flashing frequency at which this phenomenon occurs is called the critical fusion frequency (CFF). (4) Changes in sensory sensitivity When the same stimulus is continuously applied to the same receptor, the intensity of the sensation gradually decreases due to adaptation.

*Some of the terminology that mentions "critical fusion frequency" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

…例えば点滅する光を見たとき，その点滅の周期が十分短いと，もはや点滅の感覚はなく，連続した一様な明るさの光として感じられる。この現象の起こる最小の点滅頻度を臨界融合頻度critical fusion frequency(略してCFF)という。(4)感覚の感受性の変化　同じ刺激を続けて同じ受容器に与えているとき，感覚の大きさは順応によってしだいに低下していく。…

※「critical fusion frequency」について言及している用語解説の一部を掲載しています。

出典｜株式会社平凡社世界大百科事典 第２版について | 情報