Qhov sib txawv tseem ceeb ntawm thawj thiab theem nrab somatosensory cortex yog tias thawj somatosensory cortex yog lub luag haujlwm rau kev txais thiab ua cov ntaub ntawv hnov los ntawm somatic senses, proprioceptive senses, thiab ib co visceral senses, thaum lub thib ob somatosensory cortex yog lub luag hauj lwm. rau spatial thiab tactile nco txuam nrog sensory yaam puab paub.
Somatic sensations pib thaum lub cev receptors tau txais stimuli. Sensory receptors yog nyob rau hauv daim tawv nqaij, nqaij, pob qij txha thiab tendons. Lub somatosensory cortex yog ib feem ntawm peb lub hlwb uas yog lub luag haujlwm rau kev txais thiab ua cov ntaub ntawv xav tau los ntawm lub cev somatic. Muaj peb qhov tseem ceeb ntawm somatosensory cortex. Thawj somatosensory cortex thiab theem nrab somatosensory cortex yog ob ntawm lawv. Thawj somatosensory cortex tau txais cov ntaub ntawv qhia txog kev hnov mob thaum lub sij hawm thib ob somatosensory cortex khw muag khoom thiab ua rau lawv.
Primary Somatosensory Cortex yog dab tsi?
Lub ntsiab lus somatosensory cortex yog thaj chaw uas tau txais cov ntaub ntawv xav tau los ntawm somatic senses, proprioceptive senses, thiab visceral senses. Qhov chaw no tseem hu ua S1, thiab nws yog nyob rau ntawm postcentral gyrus ntawm parietal lobe ntawm lub hlwb. Yog li, thawj somatosensory cortex plays lub luag haujlwm tseem ceeb hauv kev ua cov ntaub ntawv somatosensory afferent. Somatic sensations xws li kov, mob, txoj hauj lwm ntawm lub cev, thiab lwm yam, yog ua tiav los ntawm thawj somatosensory cortex.
Daim duab 01: Thawj Somatosensory Cortex
Structurally, thawj somatosensory cortex muaj Brodmann thaj chaw 1, 2, 3a, thiab 3b. Cheeb Tsam 3 tau txais ntau ntawm cov khoom siv somatosensory. Qhov kev hnov mob yog ua tiav los ntawm cheeb tsam 3b, thaum cheeb tsam 3a ua cov ntaub ntawv los ntawm proprioceptors. Cheeb Tsam 3b xa cov ntaub ntawv kov mus rau thaj chaw 1 thiab 2 rau kev ua haujlwm ntxiv. Thaj Chaw 1 yog qhov tseem ceeb rau kev ntsuas qhov kev ntxhib los mos ntawm ib qho khoom. Thaj Chaw 2 yog lub luag haujlwm rau kev pom qhov loj thiab cov duab ntawm ib qho khoom. Nws tseem yog lub luag haujlwm rau proprioception.
Cov kab mob hauv lub paj hlwb tshwm sim vim kev ua haujlwm txawv txav ntawm cov ntaub ntawv somatosensory los ntawm thawj somatosensory cortex. Piv txwv ntawm cov kab mob xws li mob stroke, Parkinson's disease, dystonia thiab ataxia.
Secondary Somatosensory Cortex yog dab tsi?
Lub somatosensory cortex theem nrab yog ib feem ntawm cov txheej txheem somatosensory. Nws tseem hu ua S2. Nws yog nyob rau hauv lub cheeb tsam ntawm lub parietal operculum nyob rau hauv lub Upper ib feem ntawm lub lateral sulcus. Qhov tseeb, nws nyob tom qab mus rau thawj somatosensory cortex. Zoo ib yam li thawj somatosensory cortex, theem nrab somatosensory cortex yog lub luag haujlwm rau kev ua cov ntaub ntawv somatosensory. Nws teb rau somatosensory thiab pom stimuli. Nws ntseeg tau tias S2 koom nrog kev ua haujlwm siab dua xws li kev sib koom ua ke sensorimotor, kev koom ua ke ntawm cov ntaub ntawv los ntawm ob lub cev, kev mloog, kev kawm thiab kev nco, thiab lwm yam.
Daim duab 02: Secondary Somatosensory Cortex
Structurally, S2 muaj ob ntu: Brodmann thaj chaw 40 thiab 43. Txawm li cas los xij, cov ntaub ntawv me me muaj nyob rau ntawm lub koom haum thiab kev ua haujlwm ntawm tib neeg theem nrab somatosensory cortex piv rau thawj somatosensory cortex.
Similarities nruab nrab ntawm theem pib thiab theem nrab Somatosensory Cortex
- Lub hauv paus thiab theem nrab somatosensory cortex yog ob feem ntawm somatosensory system.
- Cov neurons ntawm ob thaj chaw zoo sib xws.
- Neurons nyob rau hauv ob qhov chaw teb rau hluav taws xob stimulation nrog cov lus teb zoo sib xws.
- Ob leeg nyob hauv lub parietal lobe ntawm lub hlwb.
- Lawv koom nrog coding somatosensory cov ntaub ntawv hauv cov tsiaj nyeg.
Qhov Sib txawv Ntawm Thawj thiab Thib Ob Somatosensory Cortex
Lub hauv paus somatosensory cortex yog ib feem ntawm somatosensory system uas tau txais thiab ua cov ntaub ntawv hnov lus xws li kov, kub, vibration, siab, thiab mob los ntawm lub cev. Meanwhile, lub thib ob somatosensory cortex yog ib feem ntawm lub somatosensory system uas yog lub luag hauj lwm rau spatial thiab tactile nco txuam nrog sensory kev paub. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm thawj thiab theem nrab somatosensory cortex.
Dhau li ntawm, thawj somatosensory cortex tseem hu ua S1, thaum theem nrab somatosensory cortex hu ua S2. S2 yog nyob rau hauv lub postcentral gyrus ntawm lub parietal lobe whereas S2 nyob rau tom qab mus rau lub thawj somatosensory cortex nyob rau hauv lub Upper ib feem ntawm lub sab sulcus. Ntxiv mus, S1 muaj Brodmann thaj chaw 1, 2, 3a, thiab 3b, thaum S2 muaj Brodmann cheeb tsam 40 thiab 43.
Cov infographic hauv qab no teev qhov sib txawv ntawm thawj thiab theem nrab somatosensory cortex hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Thawj vs Secondary Somatosensory Cortex
Somatosensory muaj ntau qhov chaw cortical, suav nrog thawj thiab theem nrab somatosensory cortex. Lub hauv paus somatosensory cortex yog lub luag haujlwm rau kev txais cov khoom ntawm somatosensory inputs, xws li kov, kub, vibration, siab, thiab mob, thiab lwm yam. Whereas, theem nrab somatosensory cortex yog txuam nrog spatial thiab tactile nco txuam nrog kev paub paub. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm thawj thiab theem nrab somatosensory cortex.
