Siyini isizathu sokulala okujulile lapho abanye abantu belele naphezu kwawo wonke umsindo?

Ngoba zilala zijule kakhulu futhi zinemisebenzi eminingi yobuchopho eyaziwa ngokuthi ama-sleep spindle.

Ukulala kwawo wonke umuntu kuhlukile, nakuba sonke sidlula ezigabeni ezine ezifanayo zokulala okungeyona i-REM, futhi silala izikhathi ezimbalwa ze-REM ubusuku ngabunye.

Ebuchosheni obuphapheme, indawo enkulu ebizwa ngokuthi i-thalamus isebenza njengesiteshi semisindo, izinto ezibonwayo, nezinye izinto ezishukumisayo ezingenayo, kodwa lapho ulele iyasiza ekukucindezeleni.

Amaphethini abizwa ngokuthi ama-sleep spindle, angabonakala kusetshenziswa i-electroencephalography, embula ukuqala kokulala okungeyona i-REM.

Ucwaningo lwakamuva luthole ukuthi abantu abalala ngokujulile - labo "abazolala kunoma yini" - banezinsimbi zokulala eziningi kunabanye.