In a book about the brain science of languages, sign language was described as a kind of natural language. It first attracted my attention since it delivers information for communication with visual signs of facial expression, movements of arms and so forth as Morse code does with auditory stimuli. I was wondering what was going on with Morse code from the standpoint of brain physiology and was expecting analogy or comparability between sign language and Morse code.
But Morse code was not the case of natural language. Because it has no grammer or no wide diversity like sign language does. It is just replacement of alphabets into auditory signs composed of combinations of dit and dash. Morse code reception is just a reflective perception process from auditory stimulus. Just one- to one correspondence.
Another interesting finding is that Morse code is handled by the brain part responsible for reading, as a study of modern brain physiology suggested while sign language is thought to be handled by the center of sound speech in the brain. Morse code is essentially "read" by brain.
The another question is what Morse code means as one of the simplest signs in human auditory perception. The study in Morse code reception might give insight into the scientific epistemology. I know there are some researchers being engaged in this issue. I would follow what they say with the modern technology of brain science. It might be stimulating to us.