When I found this article among abstracts in PubMed, I could not suppress a grant of admiration at it, or more exactly, was deeply impressed at the fact that such a theme as this is epistemologically investigated.
I could hardly mention or evaluate about the content of this research due to lack of knowledge about the concept in psychology. I should understand about the methodology of this investigation, which is not described in this short abstract.
I could point out that they have not paid much attention on the function of prediction as for what will follow next in the context of the message sent on CW. This is the important point to achieve reading by ears on CW as in the ordinary verbal conversation as I repeatedly emphasized in some articles in this blog. In this research, the short term memory function is regarded vital, which I could not fully approve.
Secondly, the terminology such as item memory is now related with function at certain area in the brain. They should relate such concept with brain physiological findings. Nowadays, such relationship of certain psychological concepts with anatomical/functional findings could be investigated with such as functional MRI.
The laboratory the 2nd author belongs to is in University of Pittsburgh, where, I remember, there were researchers as for reception system of CW. This theme could never be an object of research which attracts academic attention. But if CW, the simplest form of communication is investigated with modern technology in brain science, it might be flourishing in an field of experimental epistemology. CW won't become extinct at least.
Quote;
Comprehension of Morse Code Predicted by Item Recall From Short-Term Memory
- PMID: 34491811
- PMCID: PMC8642092
- DOI: 10.1044/2021_JSLHR-21-00042
Abstract
Purpose Morse code as a form of communication became widely used for telegraphy, radio and maritime communication, and military operations, and remains popular with ham radio operators. Some skilled users of Morse code are able to comprehend a full sentence as they listen to it, while others must first transcribe the sentence into its written letter sequence. Morse thus provides an interesting opportunity to examine comprehension differences in the context of skilled acoustic perception. Measures of comprehension and short-term memory show a strong correlation across multiple forms of communication. This study tests whether this relationship holds for Morse and investigates its underlying basis. Our analyses examine Morse and speech immediate serial recall, focusing on established markers of echoic storage, phonological-articulatory coding, and lexical-semantic support. We show a relationship between Morse short-term memory and Morse comprehension that is not explained by Morse perceptual fluency. In addition, we find that poorer serial recall for Morse compared to speech is primarily due to poorer item memory for Morse, indicating differences in lexical-semantic support. Interestingly, individual differences in speech item memory are also predictive of individual differences in Morse comprehension. Conclusions We point to a psycholinguistic framework to account for these results, concluding that Morse functions like "reading for the ears" (Maier et al., 2004) and that underlying differences in the integration of phonological and lexical-semantic knowledge impact both short-term memory and comprehension. The results provide insight into individual differences in the comprehension of degraded speech and strategies that build comprehension through listening experience. Supplemental Material https://doi.org/10.23641/asha.16451868.
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