A novel adaptive time-window method for detecting slow wave–spindle coupling: Comparison of temporal co-occurrence and phase-amplitude coupling approaches

Daniel Baena; L. Bryan Ray; Stuart M. Fogel

doi:10.1016/j.jneumeth.2025.110526

July 2, 2025Journal of Neuroscience MethodsOpen Access

A novel adaptive time-window method for detecting slow wave–spindle coupling: Comparison of temporal co-occurrence and phase-amplitude coupling approaches

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Key Points

Compare existing phase-amplitude coupling and fixed time-window methods for detecting slow wave–spindle coupling, and introduce an adaptive method tailored to slow wave morphology.
Evaluated phase-amplitude coupling approaches (PACTools indices: MVLMI, KLMI, PLV, GLMMI, and YASA) against temporal co-occurrence fixed-window and adaptive half-wave duration methods.
Developed an adaptive detection framework based on individual slow wave half-wave durations, integrated within the open-source Counting Sheep PSG EEG toolbox.
Phase-amplitude coupling methods demonstrated low specificity and excessive false positives, with average F1-scores of ~0.45 ± 0.01 for PACTools and an F1-score of 0.446 ± 0.011 (accuracy 0.46 ± 0.007) for YASA.
The Fixed Time Window method identified 533 ± 28 coupled spindles per participant with high specificity but exhibited a substantial average temporal lag of 1.04 ± 0.01 s relative to slow wave peaks.
The Adaptive Half-Wave method reduced average temporal lag to 0.15 ± 0.007 s while maintaining high specificity (accuracy = 0.83 ± 0.01, precision = 0.96 ± 0.01).

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Implication

Comparative study demonstrates that an adaptive time-window method improves slow wave-spindle coupling detection accuracy, indicating a reliable standard for sleep electroencephalography analysis.

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Baena et al. (2025) studied this question.

synapsesocial.com/papers/6ab9ea17e5fdc40fc21d1a86 https://doi.org/10.1016/j.jneumeth.2025.110526

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A novel adaptive time-window method for detecting slow wave–spindle coupling: Comparison of temporal co-occurrence and phase-amplitude coupling approaches

Key Points

No abstract yet

Implication

Discussion

Cite This Study

A novel adaptive time-window method for detecting slow wave–spindle coupling: Comparison of temporal co-occurrence and phase-amplitude coupling approaches

Key Points

No abstract yet

Implication

Discussion

Cite This Study

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