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X Demographics
Mendeley readers
Attention Score in Context
| Title |
Abacus in the Brain: A Longitudinal Functional MRI Study of a Skilled Abacus User with a Right Hemispheric Lesion
|
|---|---|
| Published in |
Frontiers in Psychology, January 2012
|
| DOI | 10.3389/fpsyg.2012.00315 |
| Pubmed ID | |
| Authors |
Satoshi Tanaka, Keiko Seki, Takashi Hanakawa, Madoka Harada, Sho K. Sugawara, Norihiro Sadato, Katsumi Watanabe, Manabu Honda |
| Abstract |
The abacus, a traditional physical calculation device, is still widely used in Asian countries. Previous behavioral work has shown that skilled abacus users perform rapid and precise mental arithmetic by manipulating a mental representation of an abacus, which is based on visual imagery. However, its neurophysiological basis remains unclear. Here, we report the case of a patient who was a good abacus user, but transiently lost her "mental abacus" and superior arithmetic performance after a stroke owing to a right hemispheric lesion including the dorsal premotor cortex (PMd) and inferior parietal lobule (IPL). Functional magnetic resonance imaging experiments were conducted 6 and 13 months after her stroke. In the mental calculation task, her brain activity was shifted from the language-related areas, including Broca's area and the left dorsolateral prefrontal and IPLs, to the visuospatial-related brain areas including the left superior parietal lobule (SPL), according to the recovery of her arithmetic abilities. In the digit memory task, activities in the bilateral SPL, and right visual association cortex were also observed after recovery. The shift of brain activities was consistent with her subjective report that she was able to shift the calculation strategy from linguistic to visuospatial as her mental abacus became stable again. In a behavioral experiment using an interference paradigm, a visual presentation of an abacus picture, but not a human face picture, interfered with the performance of her digit memory, confirming her use of the mental abacus after recovery. This is the first case report on the impairment of the mental abacus by a brain lesion and on recovery-related brain activity. We named this rare case "abacus-based acalculia." Together with previous neuroimaging studies, the present result suggests an important role for the PMd and parietal cortex in the superior arithmetic ability of abacus users. |
X Demographics
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Japan | 1 | 33% |
| Unknown | 2 | 67% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Members of the public | 3 | 100% |
Mendeley readers
The data shown below were compiled from readership statistics for 77 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Japan | 1 | 1% |
| Turkey | 1 | 1% |
| Germany | 1 | 1% |
| Canada | 1 | 1% |
| Unknown | 73 | 95% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 18 | 23% |
| Student > Master | 13 | 17% |
| Researcher | 7 | 9% |
| Student > Doctoral Student | 7 | 9% |
| Student > Bachelor | 4 | 5% |
| Other | 14 | 18% |
| Unknown | 14 | 18% |
| Readers by discipline | Count | As % |
|---|---|---|
| Psychology | 24 | 31% |
| Medicine and Dentistry | 10 | 13% |
| Neuroscience | 9 | 12% |
| Agricultural and Biological Sciences | 3 | 4% |
| Nursing and Health Professions | 3 | 4% |
| Other | 10 | 13% |
| Unknown | 18 | 23% |
Attention Score in Context
This research output has an Altmetric Attention Score of 13. This is our high-level measure of the quality and quantity of online attention that it has received. This Attention Score, as well as the ranking and number of research outputs shown below, was calculated when the research output was last mentioned on 26 October 2022.
All research outputs
#2,425,277
of 22,979,862 outputs
Outputs from Frontiers in Psychology
#4,721
of 30,150 outputs
Outputs of similar age
#19,402
of 245,354 outputs
Outputs of similar age from Frontiers in Psychology
#83
of 481 outputs
Altmetric has tracked 22,979,862 research outputs across all sources so far. Compared to these this one has done well and is in the 89th percentile: it's in the top 25% of all research outputs ever tracked by Altmetric.
So far Altmetric has tracked 30,150 research outputs from this source. They typically receive a lot more attention than average, with a mean Attention Score of 12.5. This one has done well, scoring higher than 84% of its peers.
Older research outputs will score higher simply because they've had more time to accumulate mentions. To account for age we can compare this Altmetric Attention Score to the 245,354 tracked outputs that were published within six weeks on either side of this one in any source. This one has done particularly well, scoring higher than 92% of its contemporaries.
We're also able to compare this research output to 481 others from the same source and published within six weeks on either side of this one. This one has done well, scoring higher than 82% of its contemporaries.