✔️ 2022-04-05 23:17:07 - Paris/France.
ushwankathelo: I-asymmetry enkulu yengqondo yasekhohlo inokuqikelela ukusebenza okungcono kunye nomndilili kwinqanaba elisisiseko lokufunda.
Umthombo: OLP
Abaphandi abakhokelwa nguMark Eckert ovela kwiYunivesithi yezoNyango yaseMzantsi Carolina, e-US, baxela ukuba iingcamango ezimbini ezibonakala zichasene nokulungiswa kolwimi zombini zichanekile.
Ukupapashwa kwijenali yofikelelo oluvulelekileyo Ibhayoloji yePLOS I-5 ka-Epreli, uphando lubonisa ukuba i-asymmetry enkulu ye-left-brain asymmetry inokuqikelela ukusebenza okungcono kunye ne-avareji kumlinganiselo osisiseko wokufunda, kuxhomekeke ekubeni uhlalutyo lwenziwa kuyo yonke ingqondo okanye kwimimandla ethile.
Ukukwazi ukuguqula ngokutyibilikayo iisimboli ezibhaliweyo zibe izandi zentetho ngumba osisiseko wokufunda owahlukileyo kumntu nomntu kwaye kunzima kubantu abaneengxaki ezifana ne-dyslexia. Ngelixa i-asymmetries yesakhiwo phakathi kwamacala asekunene nasekhohlo obuchopho ibonakala inxulunyaniswe nobu buchule, kanye kanye ukuba kuhlala kuyimfihlakalo njani.
Ukusebenzisa i-MRI ye-structural scans yabantwana abangaphezu kwe-700 kunye nabantu abadala, kunye novavanyo lokufunda lwe-pseudoword kunye nendlela yemathematika ebizwa ngokuba yi-homology eqhubekayo, uphando olutsha luvavanye iingcamango ezimbini ezichasayo malunga nendlela i-asymmetries yobuchopho kufuneka ichaphazele ngayo ukusetyenzwa kwe-phonological.
Abaphandi baye bavelisa indlela yokumisela amanqanaba e-asymmetry yobuchopho kwimifanekiso ye-MRI usebenzisa i-homology eqhubekayo. Baye bafumanisa ukuba xa indawo yommandla womntu ngamnye i-asymmetrical ithathelwe ingqalelo, i-asymmetry enkulu yengqondo yasekhohlo yayidityaniswe nokukwazi ukufunda i-pseudoword engcono. Oku kuxhasa i-hypothesis ye-cerebral lateralization.
I-asymmetries ye-Brain structure ibonisiwe, njengoko ichazwe ngenoveli yendlela ye-topological echonga iimpawu ezifanelekileyo (ekhohlo) zengxolo kwizakhiwo ze-asymmetric (ekunene). Ikhredithi: Federico Iuricuch
Ngelo xesha, bafumanisa ukuba i-asymmetry enkulu ekhohlo kwimimandla ethile - kubandakanywa ummandla wocwangciso lweemoto obizwa ngokuba yi-Brodmann Area 8 kunye nommandla wokubeka iliso obizwa ngokuba yi-dorsal cingulate-yayanyaniswa namandla okufunda aphakathi.
Qaphela, amandla okufunda amagama angama-pseudoword azange adityaniswe ngokuthe gqolo kwii-asymmetries kwimimandla yobuchopho eyaziwa ngokuba ibalulekile kwimisebenzi ethile yolwimi. Kusafuneka kuphandwe ukuba i-asymmetries yesakhiwo sasekhohlo/ekunene zichaphazela njani ezinye iintlobo zezakhono zokufunda kwaye zinefuthe kwimisebenzi yothungelwano lweelwimi olukwicala lasekhohlo.
U-Eckert wongezelela: “Iziphumo zethu zibonisa ukuba kwinqanaba labemi, i-structural brain asymmetries inxulunyaniswe nophuhliso oluqhelekileyo lwesakhono sokwenza isandi sentetho esibalulekileyo ekumiseleni ukufunda okufanelekileyo. »
Malunga nezi ndaba zophando lwe-neuroscience
Umbhali: Iofisi yeendaba
Umthombo: OLP
Uqhagamshelwano: Iofisi yeendaba - i-PLOS
Umfanekiso: Umfanekiso unikwe uFederico Iuricuch
Uphando lokuqala: Ufikelelo lwasimahla.
"I-Cortical asymmetries kwii-hierarchies ezahlukeneyo zendawo zidibaniswe namandla okucubungula i-phonological" ngu-Eckert MA, u-Vaden KI Jr, u-Iuricic F, i-Dyslexia Data Consortium (2022). Ibhayoloji yePLOS
Abstract
Ii-asymmetries ze-Cortical kwii-hierarchies zesithuba ezahlukeneyo zinxulunyaniswa nomthamo wokusetyenzwa kwezandi
Bona kwakho
Ukukwazi ukwenza imaphu yezandi zentetho kuonobumba abahambelanayo kubalulekile ekumiseleni ukufunda okufanelekileyo. Abantu bayahluka kobu buchule bokucubungula iphonological, ethe yacingelwa ukuba ibangelwa kukwahluka kwe-hemispheric asymmetries kwimimandla yobuchopho exhasa ulwimi.
I-brain lateralization hypothesis iqikelela ukuba ulwakhiwo lobuchopho olungaphaya kwe-asymmetrical luququzelela uphuhliso lwezakhono zokufunda ezisisiseko njengokusetyenzwa kwezandi. Oko kukuthi, i-asymmetries yesakhiwo kufuneka inyuke ngokuhambelana nomthamo. Ngokwahlukileyo, i-canalization hypothesis iqikelela ukuba i-asymmetries iyanciphisa ukusebenza kokuziphatha ngaphakathi koluhlu oluqhelekileyo. Oko kukuthi, ii-asymmetries zesakhiwo ziqikelelwa ukuba zihambelana ne-quadratically processing phonological processing, kunye ne-avareji ye-phonological processing eyenzekayo kwezona zakhiwo ezininzi ze-asymmetric.
Ezi ngqikelelo zavavanywa kwiisampuli ezinkulu zabantwana (N= 424) kunye nabantu abadala (N = 300), usebenzisa i-topological asymmetry analysis of T1-weighted brain images and a decoding measure of phonological processing. Bekukho ubungqina obunqongopheleyo bokunxulumana kwe-asymmetry yesakhiwo kunye ne-phonological decoding kwimimandla yobuchopho enxulumene nolwimi lwakudala.
Nangona kunjalo, kunye nenkxaso ethobekileyo ye-brain lateralization hypothesis, imilinganiselo emincinci ukuya kwephakathi yempembelelo yabonwa apho ukuchaneka kwe-phonological decoding yanda ngobukhulu be-asymmetry enkulu yesakhiwo kwimimandla ye-cortical ye-hemisphere yasekhohlo, kodwa kungekhona kwimimandla ye-cortical ye-hemisphere yasekunene , kuzo zombini iisampuli zabantu abadala kunye nabantwana.
Ukuxhasa i-canalization hypothesis, ubungakanani obuncinci ukuya obuphakathi besiphumo babonwa apho ukuchazwa kwefonological phakathi koluhlu oluqhelekileyo kwanxulunyaniswa nokunyuka kwee-asymmetries kwimimandla ethile yecortical kuzo zombini iisampulu zabantu abadala kunye nabantwana, ezibandakanya ukujonga ukusebenza kunye nokucwangciswa kweemoto kwimimandla yobuchopho enegalelo imisebenzi yolwimi oluthethwayo nolubhaliweyo.
Ke, ukufaneleka kwe-hypothesis nganye yokuchazwa kwefonological decoding kunokuxhomekeka kwisikali sombutho wobuchopho.
SOURCE: Uphonononga Iindaba
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