Intra- and Inter-Rater Reliability of Manual Feature Extraction Methods in Movement Related Cortical Potential Analysis
Abstract
:1. Introduction
2. Method
2.1. Study Design
2.2. Participants
2.3. Ethical Procedures
2.4. Experimental Procedures
2.4.1. Externally-Cued Movement Paradigm
2.4.2. EEG Data Acquisition
2.4.3. EEG Data Processing
2.4.4. MRCP evaluation by EEG Experts
2.5. Statistical Analysis
2.5.1. Primary Analysis: Average MRCP PN Labelling
2.5.2. Secondary Analysis: Epoch Selection
3. Results
3.1. Primary Findings: Average MRCP PN Labelling
3.1.1. Intra-rater Reliability (Intra- and Inter-session)
Relative Reliability
Absolute Reliability
3.1.2. Inter-rater Reliability
Relative Reliability
Absolute Reliability
3.2. Secondary Findings: Epoch Selection
3.2.1. Cosine Similarity across Conditions
3.2.2. Intra-rater Reliability (Intra- and Inter-session)
3.2.3. Inter-Rater Reliability
4. Discussion
4.1. Methodological Limitations
4.2. Future Recommendations
5. Conclusions
Supplementary Materials
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Healthy Participants | Participants with Stroke | |
---|---|---|
Mean age (years) | 28.6 (21–52) | 67 (57–78) |
Gender (males:females) | 8:12 | 2:3 |
Lesion | ||
-Hemisphere (right:left) | 3:2 | |
-Type (ischemic:haemorrhagic) | 4:1 | |
Mean time since stroke (years) | 7 (1–17) | |
Mean gait speed (m/s) | 0.4 (0.2–0.75) | |
m/s = metres per second. Bracketed age and m/s data represent ranges. |
Intra-session Reliability: PN1 and PN2 | ||||||
---|---|---|---|---|---|---|
Healthy Voluntary DF | Healthy Imagined DF | Stroke Voluntary DF | ||||
ICC | SEM | ICC | SEM | ICC | SEM | |
E1 | 1.00 (0.99–1.00) | 7.7 | 0.61 (0.34–0.89) | 155.54 | 0.84 (0.46–0.96) | 78.14 |
E2 | 0.99 (0.97–0.99) | 18.9 | 0.90 (0.67–0.97) | 63.55 | 0.91 (0.70–0.98) | 46.98 |
E3 | 0.90 (0.67–0.97) | 72.6 | 0.75 (0.30–0.93) | 75.42 | 0.93 (0.75–0.98) | 27.43 |
E4 | 1.00 (0.99–1.00) | 6.99 | 0.63 (0.09–0.89) | 120.38 | 1.00 (0.99–1.00) | 3.84 |
E5 | 1.00 (0.99–1.00) | 5.06 | 0.63 (0.06–0.89) | 180.21 | 0.95 (0.80–0.99) | 37.9 |
Inter-session Reliability: PN1 and PN3 | ||||||
E1 | 0.99 (0.95–1.00) | 19.61 | 0.55 (−0.03–0.86) | 184.61 | 0.90 (0.65–0.98) | 57.47 |
E2 | 0.98 (0.93–0.97) | 30.56 | 0.76 (0.28–0.93) | 115.10 | 0.94 (0.77–0.98) | 41.22 |
E3 | 0.98 (0.93–1.00) | 32.61 | 0.48 (−0.09–0.83) | 116.01 | 0.85 (0.50–0.96) | 55.81 |
E4 | 0.95 (0.83–0.99) | 52.76 | 0.05 (−0.60–0.64) | 279.2 | 0.80 (0.42–0.95) | 72.81 |
E5 | 1.00 (0.98–1.00) | 15.32 | 0.68 (0.10–0.91) | 193.39 | 0.83 (0.46–0.96) | 65.91 |
Inter-rater reliability: PN1, PN2, PN3 | ||||||
---|---|---|---|---|---|---|
Healthy Voluntary DF | Healthy Imagined DF | Stroke Voluntary DF | ||||
ICC | SEM | ICC | SEM | ICC | SEM | |
PN1 | 0.99 (0.97–1.00) | 26.13 | 0.40 (0.14–0.74) | 187.89 | 0.84 (0.67–0.95) | 58.71 |
PN2 | 0.95 (0.88–0.98) | 51.15 | 0.76 (0.53–0.92) | 104.81 | 0.88 (0.74–0.96) | 62.12 |
PN3 | 0.97 (0.92–0.99) | 39.75 | 0.2 (0.00–0.60) | 246.51 | 0.78 (0.67–0.87) | 79.17 |
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Alder, G.; Signal, N.; Rashid, U.; Olsen, S.; Niazi, I.K.; Taylor, D. Intra- and Inter-Rater Reliability of Manual Feature Extraction Methods in Movement Related Cortical Potential Analysis. Sensors 2020, 20, 2427. https://doi.org/10.3390/s20082427
Alder G, Signal N, Rashid U, Olsen S, Niazi IK, Taylor D. Intra- and Inter-Rater Reliability of Manual Feature Extraction Methods in Movement Related Cortical Potential Analysis. Sensors. 2020; 20(8):2427. https://doi.org/10.3390/s20082427
Chicago/Turabian StyleAlder, Gemma, Nada Signal, Usman Rashid, Sharon Olsen, Imran Khan Niazi, and Denise Taylor. 2020. "Intra- and Inter-Rater Reliability of Manual Feature Extraction Methods in Movement Related Cortical Potential Analysis" Sensors 20, no. 8: 2427. https://doi.org/10.3390/s20082427