A semiretired pediatrician living in a countryside in Japan will describe what he thinks of his hobbies, life and the events around himself.
2/28/2024
A dinner dish and being a testee for the cognitive function
2/27/2024
Decoding Morse code still through the same process in brain as that for reading
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.
2/21/2024
Warm months, ume fully out and catching up with house chores.
2/09/2024
Seiji Ozawa has passed away
A renowned dirigent, Seiji Ozawa, has died at age 88 years today. He has suffered from a cancer for years and this has been expected. But still a sad news.
When I was interested in music in my teenage days, a vinyl of Symphonie Fantastique by Berlioz was the very first one I bought by myself. It was performed by Toronto Symphony Orchestra with dirigent of Ozawa. Here. With home made amplifier and speakers, I have not been bored with listening it again and again. I still remember how it started with dreaming melody. It has lead me not only to the classical music but also to adolescence.
Ever since, he has always been in the scenes of classical music, even though I have not attended to any concert he conducted. When I grew up, he was already world famous conductor and there was very little chance for me to listen to him at a hall. I have seen him through CD, TV programs, internet programs or books. The book of his dialogue with Toru Takemitsu, which I mentioned before, was a remarkable work. He has been energitic and willing to teach young musicians.
I could never forget his involvement with Saito Kinen Orchestra. It was organized by him and other disciples of Hideo Saito and has held a music festival in Shinshu every summer. A lot of musicians have been joining this event from all over the world. One of my friends in university orchestra days has been a practice pianist there. I would attend a concert of Saito Kinen Orchestra some day but it won't come true, at least, while Ozawa was alive and taking tact on the podium.
This performance of Matthews Passion by Saito Kinen Orchestra in 1997. One of the most memorable performances by Ozawa. Serious, grave but still light stepped.
2/08/2024
Trying to open the shelf door
2/05/2024
Another ham of good old days gone away
A few days ago, I received an e mail from Vic W9RGB, which told of K5FA Fred's passing. He seemed to have had dementia which caused a fatal complication. I have not heard him for over 10 years. That was the reason.
I have talked Fred quite often from 2000 through 2010. Vic used to say Fred was a typical southerner with good sense of humor. In addition, he loved old fashioned CW chat. While that period, having lasted not so long, we have met on 7026KHz plus or minus. Around 12Z, that was the dawn in Mississippi and evening hours after supper here. There was a good path from here to Mid Southern US around that time.
He told me he had been a bachelor and took over the family business of furniture store. He seemed to have a big property. He has planted a lot of vegetables there and also never forgot putting up old fashioned wire antennas. Once he told me he had set a couple of V beams for VK/ZL and Europe. I can't recall what radios he has used but they should not be modern sets.
He seemed to have close bonding with his family members. His two brothers were also ham. And one of them was a physician. Whenever he has had reunion with them, he always pleasantly told about that to me. He had an old aunt named Nora those days. She was sent into a nursing facility when her daughter thought it was not possible for her to live alone at her home. Nora was not very happy at the facility and would like to return to her home. Fred has worked hard to make it possible for her to live by herself again. Her daughter accepted Fred's proposal that he and some helpers would visit Nora at her home at regular interval. Nora could come back to sweet home again. I still remember how excited he was at that project. Fred was happily reporting that to me as if it were his own event.
Fred was not, so far as I know, an avid DXer. I have never heard any episode he stayed up for a night or two for the hectic events in ham radio. He was an old fashioned ragchewer. That was why I had enjoyed talking to him so often. There used to be a group of CW operators hanging out on that frequency around the same time. Evidently, Don WB6BEE who had waked up after a long hibernation from ham radio activities was the key person in the group. Fred must be one of the gang or even the earliest operator who has activated that loosely united group. Later, Don has moved to the East Coast. The group had expired spontaneously so far as I realized in the last couple of years before I quit radio. Or, hopefully, there could still be some hams hanging out there.
However, the news of Fred's passing sure convinced me of a time being over for now. It was a good old days.