Somnus undarum lentarum

Somnus undarum lentarum (Anglice slow-wave sleep), etiam somnus altus, est gradus N3 somni non REM.^[2] In hominibus, duratio gradus somni undarum lentarum circiter 70, usque ad 90 minutas est.^[3] De consuetudine, haec duratio in parte noctis primae et tantum in iuniores observatur, i. e. non in aetate provecta, qua somni architectura usitata amittitur.

Struthocameli dormientes, cum somno undarum lentarum, cum phasibus somni REM et motuum capitis somnio causa, etiam cum vigilantia^?.^[1]

Somno alto ineunte, somnus vix interruptionem sinit, nisi stimuli fortiores structurae trunci encephali signa per neurona glutamatergica thalamo mediodorsali excitent.^[4]

Somnus undarum lentarum phasis putatur, quo consolidatio memoriae fit, quod transitus ab memoria breve (memoria operante) ad memoriam duram significat.

Architectura somni

Hypnogramma phases somni ostendens: cycli diversorum graduum somni occurrunt. Imago cum conventione graduum 4 priore - hodie: N1-N3^[5] nominantur. Somnus undarum lentarum stadio N3 ineunte observatur.

Nocte somnus hominis et diversarum bestiarum phases recurrentes, de consuetudine quater, quinquiens repetentes ostendit. Haec typica somni architectura vero tantum in iuniores, non in aetate provecta, observatur, qua gradus N3 rarius perveniri, simul frequentius leviter dormiri solet.

Consolidatio memoriae

Consolidatio memoriae, quod somno undarum lentarum attribuitur, transitus memoriae ab memoria breve (memoria operante) ad memoriam duram significat.^[6] Dividitur in consolidationes synapticam et systematis: primo consolidatio in synapsium chemicarum gradu horis paucis post discentem. Deinde, inter hebdomades, memoria nova ope hippocoampi cerebri confirmatur. In senectute, deminutionis somni undarum lentarum causa, consolidatio memoriae deminui solet.^[7]

Notae

↑ Lesku J. A., Meyer L. C., Fuller A., Maloney S. K., Dell'Omo G., Vyssotski A. L., Rattenborg N. C. (2011). "Ostriches sleep like platypuses". PLOS ONE 6 (8): e23203 doi:10.1371/journal.pone.0023203.
↑ Rechtschaffen A, Kales A (1968). A Manual of Standardized Terminology, Techniques and Scoring System For Sleep Stages of Human Subjects. US Dept of Health, Education, and Welfare; National Institutes of Health.
↑ Suárez F. R. (1999). "The neurobiology of slow-wave sleep". Anales de la Real Academia Nacional de Medicina 116 (1): 209-24 .
↑ Shin A., Park S., Shin W., Woo J., Jeong M., Kim J., Kim D. (Martius 2023). "A brainstem-to-mediodorsal thalamic pathway mediates sound-induced arousal from slow-wave sleep". Current biology 33 (5): 875-885.e5 doi:10.1016/j.cub.2023.01.033.
↑ N3 hodiernus est fusio graduum priorum 3 et 4.
↑ Klinzing J. G., Niethard N., Born J. (October 2019). "Mechanisms of systems memory consolidation during sleep". Nature Neuroscience 22 (10): 1598-610 doi:10.1038/s41593-019-0467-3.
↑ Muehlroth B. E., Sander M. C., Fandakova Y., Grandy T. H., Rasch B., Shing Y. L., Werkle-Bergner M. (Aprilis 2020). "Memory quality modulates the effect of aging on memory consolidation during sleep: Reduced maintenance but intact gain". Neuroimage: 209:116490 doi:10.1016/j.neuroimage.2019.116490.

Nexus interni

EEG
Somnus

[1] Lesku J. A., Meyer L. C., Fuller A., Maloney S. K., Dell'Omo G., Vyssotski A. L., Rattenborg N. C. (2011). "Ostriches sleep like platypuses". PLOS ONE 6 (8): e23203 doi:10.1371/journal.pone.0023203.

[2] Rechtschaffen A, Kales A (1968). A Manual of Standardized Terminology, Techniques and Scoring System For Sleep Stages of Human Subjects. US Dept of Health, Education, and Welfare; National Institutes of Health.

[3] Suárez F. R. (1999). "The neurobiology of slow-wave sleep". Anales de la Real Academia Nacional de Medicina 116 (1): 209-24 .

[4] Shin A., Park S., Shin W., Woo J., Jeong M., Kim J., Kim D. (Martius 2023). "A brainstem-to-mediodorsal thalamic pathway mediates sound-induced arousal from slow-wave sleep". Current biology 33 (5): 875-885.e5 doi:10.1016/j.cub.2023.01.033.

[5] N3 hodiernus est fusio graduum priorum 3 et 4.

[6] Klinzing J. G., Niethard N., Born J. (October 2019). "Mechanisms of systems memory consolidation during sleep". Nature Neuroscience 22 (10): 1598-610 doi:10.1038/s41593-019-0467-3.

[7] Muehlroth B. E., Sander M. C., Fandakova Y., Grandy T. H., Rasch B., Shing Y. L., Werkle-Bergner M. (Aprilis 2020). "Memory quality modulates the effect of aging on memory consolidation during sleep: Reduced maintenance but intact gain". Neuroimage: 209:116490 doi:10.1016/j.neuroimage.2019.116490.

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