NSDR & Neuroplasticity — References

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Parent Topic: NSDR & Neuroplasticity | References Hub: 01 - Foundations References MOC

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Primary Literature & Landmark Studies

Kjaer et al. (2002)

• Citation: Kjaer, T. W., Bertelsen, C., Piccini, P., Brooks, D., Alving, J., & Lou, H. C. (2002). Increased dopamine tone during meditation-induced change of consciousness. Cognitive Brain Research, 13(2), 255–259.
• Identifiers: DOI: 10.1016/S0926-6410(01)00106-9 (DOI · SciDB · Scholar) | PMID: 11958969 (PubMed · Europe PMC)
• Study Design: Within-subject randomized crossover neuroimaging study ($N=8$ experienced practitioners) using ${}^{11}\text{C}$-raclopride Positron Emission Tomography (PET) and continuous EEG during guided Yoga Nidra relaxation vs. resting control speech attention.
• Key Quantitative Outcomes:
  • ${}^{11}\text{C}$-raclopride binding potential in the ventral striatum decreased significantly by 7.9% ($p<0.013$), corresponding to a 65% increase in endogenous synaptic dopamine release during Yoga Nidra.
  • Striatal dopamine elevation correlated significantly with increases in EEG theta power ($4–7\text{Hz}$, $r=-0.74$) and decreased subjective desire for voluntary motor action.

Buch et al. (2021)

• Citation: Buch, E. R., Claudino, L., Quentin, R., Bönstrup, M., & Cohen, L. G. (2021). Consolidation of human skill linked to waking hippocampo-neocortical replay. Cell Reports, 35(10), 109193.
• Identifiers: DOI: 10.1016/j.celrep.2021.109193 (DOI · SciDB · Scholar) | PMID: 34107255 (PubMed · Europe PMC)
• Study Design: High-density Magnetoencephalography (MEG) human neurophysiology trial ($N=30$) mapping neural trajectory replay during alternating motor skill practice and waking rest periods.
• Key Quantitative Outcomes:
  • Identified rapid, ~20-fold temporally compressed neural replay of the learned motor sequence across the hippocampus, sensorimotor cortex, and entorhinal cortex during brief waking rest periods.
  • Replay events occurred 30× more frequently during waking rest than during active practice, and the density of waking-rest replay directly predicted the magnitude of micro-offline skill consolidation ($p<0.001$).

Kilgard & Merzenich (1998)

• Citation: Kilgard, M. P., & Merzenich, M. M. (1998). Cortical map reorganization enabled by nucleus basalis activity. Science, 279(5357), 1714–1718.
• Identifiers: DOI: 10.1126/science.279.5357.1714 (DOI · SciDB · Scholar) | PMID: 9497289 (PubMed · Europe PMC)
• Study Design: In vivo neurophysiological mapping of adult primary auditory cortex (A1) following acoustic stimuli paired with electrical microstimulation of the cholinergic nucleus basalis.
• Key Quantitative Outcomes:
  • Demonstrated that whereas passive sensory exposure in adult brains produces zero cortical map expansion, pairing sensory stimuli with nucleus basalis acetylcholine release expands the cortical representation of the paired frequency by 200–300% ($p<0.0001$), proving that cholinergic attentional gating is the primary permissive trigger for adult experience-dependent neuroplasticity.

Datta et al. (2023)

• Citation: Datta, K., Bhutambare, A., Vranish, J., & Kanitkar, M. (2023). Improved sleep, cognitive processing and enhanced learning and memory task accuracy with Yoga Nidra practice in novices. PLOS ONE, 18(12), e0294678.
• Identifiers: DOI: 10.1371/journal.pone.0294678 (DOI · SciDB · Scholar) | PMID: 38091317 (PubMed · Europe PMC) | Companion Insomnia Trial: Datta et al. (2021), Sleep Vigilance, DOI: 10.1007/s41782-021-00136-2 (DOI · SciDB · Scholar)
• Study Design: Longitudinal human neurophysiological and cognitive intervention trial ($N=41$ healthy novices practicing a standardized 27-minute daytime Yoga Nidra / NSDR protocol for 2 weeks, assessed via overnight polysomnography, EEG, and 10 computerized cognitive battery tasks).
• Key Quantitative Outcomes:
  • Daytime Yoga Nidra practice significantly increased nocturnal polysomnographic N3 slow-wave delta sleep percentage ($p=0.003$) and increased EEG delta power in the central area ($+1.93\mu {\text{V}}^2,p=0.032$).
  • Significantly accelerated reaction times and improved accuracy across all cognitive tasks, including working memory, spatial object learning, abstract matching, and emotional recognition ($p<0.01$), while reducing morning-to-evening salivary cortisol stress markers.