Reticular tsim. Cov kev sib raug zoo nrog cov lub cev muaj zog tshuaj

Brainstem reticular tsim yog lub tsim ntawm plexiform, plurality ntawm neural lug, nyob rau hauv central qhov chaw (thalami, midbrain thiab medulla). Neurons uas ua rau nws mus txog, sib txawv nyob rau hauv loj, neurite ntev, qauv. Lom lawv tuab weave.

Zog ntawm cov reticular tsim

Tsim muaj feem xyuam rau lub cerebellum, txha caj qaum, cortex nyob rau hauv lub cerebral hemispheres, lub limbic (muab cov tseem ceeb tshaj plaws tshua nyob hauv lub cev) system. Nyob rau hauv lub tsim ntawm lub mesh INTERACTIONS ascending (afferent) thiab nqis (efferent) pulses. Lub pulses yuav circulate thiab kaw neural circuits. Nyob rau hauv cov ntaub ntawv no, qhov ntxhov siab yog muab nyob rau hauv lub reticular tsim neurons ntawm tej theem. Cov no ib tug tej yam kev mob siab rau cov dej num ntawm ntau yam departments ntawm lub hauv paus poob siab system. Kho cov neeg kawm ntawv ntawm excitation ntawm lub mesh tsim yog nqa daim tawv hemispheres.

Reticular tsim muaj cov cheeb tsam uas muaj peev xwm ntawm muab los yog yooj yim lub inhibitory ntxim rau cov leeg nrob lub cev muaj zog tshuaj.

Rau cov thawj lub sij hawm sib raug zoo ntawm cov leeg nrob reflexes thiab stimulation ntawm ntau qhov chaw ntawm lub mesh tsim sab I. M. Sechenovym. Tom qab, lub American neurophysiologist Megounom nrog kev pab los ntawm cov neeg ua hauj twb kom meej meej taw qhia los ntawm cov kev soj xyuas Sechenov.

Yog li, thaum hluav taws xob stimulation ntawm lub nrub nrab teb nyob rau hauv anesthetized liab thiab miv yog ib tug ua tiav tas zog, raws li ib tug reflex, thiab ua rau stimulation ntawm lub cev muaj zog aav ntawm lub cerebral cortex. Yog li tag nrho cov nres phenomenon uas provokes tus reticular tsim, tau undergone voos, yog ob sab sib dho nyob rau hauv cov xwm.

Thaum kis tau tus sab reticular tsim cheeb tsam ntawm lub periphery, exerting ib inhibitory nyhuv cheeb tsam kuaj yooj yim nyhuv on txha caj lub cev muaj zog ua si.

Lub reticular tsim yog tau mus ua hauj lwm nyob rau txawv txha caj kev kawm ntawv.

Nws yuav tsum tau muab sau tseg tias cov cheeb tsam ntawm lub mesh tsim, muaj yooj yim nyhuv on lub cev muaj zog ua si extends anteriorly. Yog li, nws npog tsis tau tsuas yog lub cheeb tsam ntawm lub medulla oblongata, tab sis lub midbrain thiab Pons.

Net kev kawm ntawv muaj peev xwm muaj kev cuam tshuam nqaij laus. Qhov no qhib txoj hauj lwm R. granite. Swedish neurophysiologist pom tias lub reticular tsim muaj feem xyuam rau cov kev ua ntawm gamma lub cev muaj zog neurons. Lawv axons kis tau los ntawm qhov thiaj li hu ua "intrafuzarnym" nqaij fibers thiab ib ce muaj zog ib qho tseem ceeb luag hauj lwm nyob rau hauv cov kev cai ntawm lub sij hawm ntawm lub cev taw thiab postures.

Ntau cov cheeb tsam ntawm lub reticular tsim yuav muaj ib tug stimulating cawv rau cov generalized xwm ntawm lub cerebral cortex, pib nrog cov tag nrho cov ntawm nws cheeb tsam.

Tswj mesh tsim kev ua si thiab rhiab heev rau ntau yam tshuaj hais circulating nyob rau hauv cov ntshav yog nqa tawm los ntawm humoral yam (carbon dioxide, catecholamines, etc ..). Qhov no, nyob rau hauv lem, muaj txhawb rau kev koom ua ke ntawm lub reticular tsim nyob rau hauv cov kev cai ntawm tej yam autonomic zog.

Nws yuav tsum tau muab sau tseg tias txoj kev tshawb ntawm cov kev sib raug zoo ntawm cov mesh tag nrog lwm subcortical lug, nws pub rau peb kom peb kho cov khoom ntawm neurophysiological mechanisms ntawm qhov xwm ntawm ib tug neeg lub xeev (mob, waking, pw tsaug zog, vigilance, kev xav thiab motivational lub xeev thiab lwm tus). Siv nyob rau hauv cov tshuaj cov kev tshawb fawb qhia ib tug neeg kho mob ntawm Cns pathologies, txhais tau ib tug tshiab mus kom ze rau tej yam kev kho mob tej teeb meem.