| Title |
MEG spectral analysis in subtypes of mild cognitive impairment
|
|---|---|
| Published in |
GeroScience, February 2014
|
| DOI | 10.1007/s11357-014-9624-5 |
| Pubmed ID | |
| Authors |
M. E. López, P. Cuesta, P. Garcés, P. N. Castellanos, S. Aurtenetxe, R. Bajo, A. Marcos, M. L. Delgado, P. Montejo, J. L. López-Pantoja, F. Maestú, A. Fernandez |
| Abstract |
Mild cognitive impairment (MCI) has been described as an intermediate stage between normal aging and dementia. Previous studies characterized the alterations of brain oscillatory activity at this stage, but little is known about the differences between single and multidomain amnestic MCI patients. In order to study the patterns of oscillatory magnetic activity in amnestic MCI subtypes, a total of 105 subjects underwent an eyes-closed resting-state magnetoencephalographic recording: 36 healthy controls, 33 amnestic single domain MCIs (a-sd-MCI), and 36 amnestic multidomain MCIs (a-md-MCI). Relative power values were calculated and compared among groups. Subsequently, relative power values were correlated with neuropsychological tests scores and hippocampal volumes. Both MCI groups showed an increase in relative power in lower frequency bands (delta and theta frequency ranges) and a decrease in power values in higher frequency bands (alpha and beta frequency ranges), as compared with the control group. More importantly, clear differences emerged from the comparison between the two amnestic MCI subtypes. The a-md-MCI group showed a significant power increase within delta and theta ranges and reduced relative power within alpha and beta ranges. Such pattern correlated with the neuropsychological performance, indicating that the a-md-MCI subtype is associated not only with a "slowing" of the spectrum but also with a poorer cognitive status. These results suggest that a-md-MCI patients are characterized by a brain activity profile that is closer to that observed in Alzheimer disease. Therefore, it might be hypothesized that the likelihood of conversion to dementia would be higher within this subtype. |
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Geographical breakdown
| Country | Count | As % |
|---|---|---|
| Spain | 1 | 50% |
| France | 1 | 50% |
Demographic breakdown
| Type | Count | As % |
|---|---|---|
| Scientists | 1 | 50% |
| Members of the public | 1 | 50% |
Mendeley readers
The data shown below were compiled from readership statistics for 92 Mendeley readers of this research output. Click here to see the associated Mendeley record.
Geographical breakdown
| Country | Count | As % |
|---|---|---|
| United Kingdom | 1 | 1% |
| Switzerland | 1 | 1% |
| Unknown | 90 | 98% |
Demographic breakdown
| Readers by professional status | Count | As % |
|---|---|---|
| Student > Ph. D. Student | 22 | 24% |
| Researcher | 16 | 17% |
| Other | 7 | 8% |
| Student > Doctoral Student | 4 | 4% |
| Student > Bachelor | 4 | 4% |
| Other | 14 | 15% |
| Unknown | 25 | 27% |
| Readers by discipline | Count | As % |
|---|---|---|
| Neuroscience | 21 | 23% |
| Psychology | 13 | 14% |
| Medicine and Dentistry | 7 | 8% |
| Agricultural and Biological Sciences | 6 | 7% |
| Engineering | 4 | 4% |
| Other | 11 | 12% |
| Unknown | 30 | 33% |
Attention Score in Context
This research output has an Altmetric Attention Score of 1. 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 21 February 2014.
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#17,286,379
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#1,250
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Outputs of similar age from GeroScience
#10
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