Exosomatic memory
Encyclopedia
Exosomatic memory is the recording of memories
Memory
In psychology, memory is an organism's ability to store, retain, and recall information and experiences. Traditional studies of memory began in the fields of philosophy, including techniques of artificially enhancing memory....

 outside the brain. The earliest forms of symbolic behavior—scratching marks on bones—seem to be intended as exosomatic memory. However it was the invention of writing
Writing
Writing is the representation of language in a textual medium through the use of a set of signs or symbols . It is distinguished from illustration, such as cave drawing and painting, and non-symbolic preservation of language via non-textual media, such as magnetic tape audio.Writing most likely...

 that allowed complex memories to be recorded.

A more narrow meaning of exosomatic memory is a computerized information system
Information system
An information system - or application landscape - is any combination of information technology and people's activities that support operations, management, and decision making. In a very broad sense, the term information system is frequently used to refer to the interaction between people,...

 that interfaces directly with the brain and functions as an extension of the users memory. Such systems have been used as plot device in numerous science fiction
Science fiction
Science fiction is a genre of fiction dealing with imaginary but more or less plausible content such as future settings, futuristic science and technology, space travel, aliens, and paranormal abilities...

 stories, especially among the cyberpunk
Cyberpunk
Cyberpunk is a postmodern and science fiction genre noted for its focus on "high tech and low life." The name is a portmanteau of cybernetics and punk, and was originally coined by Bruce Bethke as the title of his short story "Cyberpunk," published in 1983...

genre. More recently, as scientific knowledge of neurology improves some such as Gregory B. Newby are suggesting that such a device may be possible.
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