An interesting research article on the brain science study of Morse code decoding.
With the new method of investigation on activities and functions in areas of the brain, that is, magnetoencephalography, they have found Morse code decoding activates left inferior frontal cortex and angular gyrus. It means working memory encoding, long term memory retrieval and demanding cognitive control are involved in the process. Decoding Morse code, in a slow process of recognition, goes through the same neurological process as that for reading written text.
So what? Two points could be indicated from this research.
Morse code decoding, as told above, is done through the same neurological process as reading. In actual reading, we reflect what is written before the present sentence and expect what comes next, almost in unconsciousness, while reading certain sentence. We should be conscious of that process while learning decoding message with Morse code.
The other point should be that Morse code, the simplest mode of communication often slower than the other modes, could contribute as a subject to study neurological process of recognition. As told before, even if this mode gets extinct even in ham radio, it may survive as a subject of epistemological process in the brain. They say magnetoelectrography is a useful technique in time lapsing research even if not giving accurate spatial informations. It may yield further findings on the neurological process of Morse code decoding as a function of cognition.
https://pubmed.ncbi.nlm.nih.gov/37792277/
Temporal dynamics of oscillatory activity during nonlexical language decoding: Evidence from Morse code and magnetoencephalography
- PMID: 37792277
- PMCID: PMC10619365
- DOI: 10.1002/hbm.26505
Abstract
Understanding encoded languages, such as written script or Morse code, requires nonlexical and lexical processing components that act in a parallel and interactive fashion. Decoding written script-as for example in reading-is typically very fast, making the investigation of the lexical and nonlexical components and their underlying neural mechanisms challenging. In the current study, we aimed to accomplish this problem by using Morse code as a model for language decoding. The decoding of Morse code is slower and thus allows a better and more fine-grained investigation of the lexical and nonlexical components of language decoding. In the current study, we investigated the impact of various components of nonlexical decoding of Morse code using magnetoencephalography. For this purpose, we reconstructed the time-frequency responses below 40 Hz in brain regions significantly involved in Morse code decoding and word comprehension that were identified in a previous study. Event-related reduction in beta- and alpha-band power were found in left inferior frontal cortex and angular gyrus, respectively, while event-related theta-band power increase was found at frontal midline. These induced oscillations reflect working-memory encoding, long-term memory retrieval as well as demanding cognitive control, respectively. In sum, by using Morse code and MEG, we were able to identify a cortical network underlying language decoding in a time- and frequency-resolved manner.
Keywords: alpha oscillations; beta oscillations; cognitive control; frontal midline theta; nonlexical language decoding; phonological long-term memory; reading model; working memory.
© 2023 The Authors. Human Brain Mapping published by Wiley Periodicals LLC.
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