विधियों की तुलना करें
चुनी हुई विधियों की आमने-सामने समीक्षा करें; भिन्नता वाली पंक्तियाँ रेखांकित हैं।
| निम्न-आवृत्ति उतार-चढ़ाव की आयाम× | वौक्सेल-आधारित मॉर्फोमेट्री× | |
|---|---|---|
| क्षेत्र | तंत्रिका प्रतिबिंबन | तंत्रिका प्रतिबिंबन |
| परिवार | Process / pipeline | Process / pipeline |
| उद्भव वर्ष≠ | 2007 | 2000 |
| प्रवर्तक≠ | Long Xiao-Yan | John Ashburner |
| प्रकार≠ | Resting-state fMRI amplitude analysis | Structural MRI gray matter analysis pipeline |
| मौलिक स्रोत≠ | Yang, H., Long, X. Y., Yang, Y., et al. (2007). Amplitude of low frequency fluctuation within visual areas revealed by resting-state functional MRI. NeuroImage, 36(4), 773–781. DOI ↗ | Ashburner, J., & Friston, K. J. (2000). Voxel-based morphometry—the methods. NeuroImage, 11(6), 805–821. DOI ↗ |
| उपनाम | ALFF, low-frequency oscillation amplitude | VBM, grey matter morphometry |
| संबंधित≠ | 3 | 2 |
| सारांश≠ | Amplitude of Low-Frequency Fluctuation (ALFF) is a resting-state fMRI metric that quantifies the strength of spontaneous low-frequency oscillations (typically 0.01–0.1 Hz) in the brain. Introduced by Yang and colleagues in 2007, ALFF provides a voxel-wise measure of local brain activity, reflecting the amplitude of spontaneous fluctuations in blood oxygen levels at rest. | Voxel-Based Morphometry (VBM) is a whole-brain statistical technique for detecting local differences in gray matter volume or concentration from structural MRI. Introduced by John Ashburner and Karl Friston in 2000, VBM enables researchers to identify regional brain volume changes associated with disease, aging, learning, and other factors without requiring a priori region-of-interest definitions. |
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