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Nerve signals are frequency modulated; i.e. the number of action potentials that occur in a unit of time is proportional to the intensity of the transmitted signal. Typical action potential frequency is between 4 and 12 Hz.
Hand and arm signals for United States Army use were first established in Field Manual 21-60. They were amended in Training Circular 3-21.60. [1] Hand and Arm signals are one of the most common forms of communication used by United States Army soldiers or group of soldiers when a radio silence is in effect or if the soldiers need to remain ...
10. The manual alphabet can be used on either hand, normally the signer's dominant hand – that is, the right hand for right-handers, the left hand for left-handers. [1] Most frequently, the manual alphabet is signed just below the dominant shoulder of the signer. When used within other signs or in a context in which this is not plausible ...
The Signal for Help designed and publicised by the Canadian Women's Foundation. During the COVID-19 pandemic, there were extensive lockdowns which kept people at home.As people then mainly communicated by social media, the Canadian Women's Foundation (CWF) devised a hand signal called the Signal for Help which women could use to secretly indicate that they were at risk of domestic violence and ...
The French Sign Language (LSF, from langue des signes française) or Francosign family is a language family of sign languages which includes French Sign Language and American Sign Language. The LSF family descends from Old French Sign Language (VLSF), which developed among the deaf community in Paris. The earliest mention of Old French Sign ...
Glottolog. None. Old French Sign Language (French: Vieille langue des signes française, often abbreviated as VLSF) was the language of the deaf community in 18th-century Paris at the time of the establishment of the first deaf schools. [citation needed] The earliest records of the language are in the work of the Abbé de l'Épée, who stumbled ...
Fingerspelling (or dactylology) is the representation of the letters of a writing system, and sometimes numeral systems, using only the hands. These manual alphabets (also known as finger alphabets or hand alphabets) have often been used in deaf education and have subsequently been adopted as a distinct part of a number of sign languages.
Tactile signing is a common means of communication used by people with deafblindness. It is based on a sign language or another system of manual communication. "Tactile signing" refers to the mode or medium, i.e. signing (using some form of signed language or code), using touch. It does not indicate whether the signer is using a tactile form of ...