
kazhchappadinulla kazhchayum pravarthanatthinulla kazhchayum

neuro sayans saahithyathile kaazhchaykkum kaazhchaykkum ulla kazhcha rund tharam vishwal prosessinghine soochippikkunnu niram, valippam, aakruthi (kaazhchaykkulla kazhcha) thudangiya vasthukkalude savisheshathakalekurichulla vivarangal nedunnathinulla vishwal prosessing, baseball (pravarthanatthinulla kazhcha) polulla chalanangale nayikkaan aavashyamaaya prosessing. shaareerikamaayi vyathyasthamaaya mastishka shringalakalaanu itharathilulla prosessing nadathunnathennu nilavil oru ashayam charcha cheyyappedunnu. ventral vishwal stream kaazhchaye perseptionaayi samrakshikkunnu, athesamayam dorsal vishwal stream pravarthanatthinaayi kaazhchaye samrakshikkunnu. klinikkal gaveshanathilum mrugangalude pareekshanangalilum eee aashayathin pinthuna labhikkunnu.
thalachorile vishwal prosessing.
dorsal stream, ventral stream ennee rund streamukaliloode masthishkathiloode vishwal stimulikal prosess cheiyunnathaayi ariyappedunnu. dorsal paathaye saadhaaranayaayi 'evide' sisttam ennu vilikkunnu; ithu sthaanam, dooram, sthaanam, chalanam ennivayude prosessing anuvadikkunnu. eee paatha praadhamika vishwal courtexil ninnu dorsali aayi paariyettal lobylake vyaapikkunnu. vivarangal pinneedu frondall lobinte motor courtexilake nalkunnu. randaamathe paatha, ventral stream, aakruthi, valuppam, vasthukkal, ooriyanteshan, tekst ennivayumaayi bandhapetta vivarangal prosess cheiyunnu. ithu saadhaaranayaayi 'enthaanu' samvidaanam ennariyappedunnu. eee sisttathile vishwal stimuli praadhamika vishwal courtexil ninnu medial temporal loob vare ventralayi prakriya cheiyunnu. kuttikkaalatthe vikasanathil, pravarthanathinaayulla kazhchayum kazhchappadinulla kazhchayum vyathyastha nirakkil vikasikkunnu, ithu vishwal prosessinghinaayi rund vyathyasthamaaya, rekheeya streamukalude sidhaanthathe pinthunaykkunnu.
melpparanja sidhaanthathe aduthide parinamavumaayi bandhappett puthiyathum kooduthal parsimonius sidhaantham velluvilichittund. drishya vivarangal prosess cheyyumbol rund streamukalum kaikorth pravartthikkanam. neuro anatamikkal, function neuro imaging padanangal kuranjathu 40 vyathyastha pradeshangalekkurichu pinbhaagathe thalachoril nilanilkkunna onniladhikam vishwal maappukal theliyichittundu. puramlokatthinte orotta bhagam vishwal prosessing niyanthrikkunnu, thudarnnu mukhangal polulla nirddishta uthejakangalodu ekakoshangal prathikarikkunna prathyeka mekhalakal thirichariyunnu. kooduthal shringhala polulla maathrkaye soochippikkunna eee sidhaantham gaveshakarkidayil kooduthal kooduthal amgeekarikkappedunnu. mukalil soochippicha paatha maathruka ippol niravadhi samgharshangal anubavikkunnu. pravartthanangal prosess cheiyunnathinu onniladhikam vazhikalundennu pareekshanaathmakamaayi kandethiyittundu. udaaharanathinu, moonnu vyathyastha prosessing roottukal dorsali nilanilkkaam, onnu manassilakkaan, mattonn athicherunnathinu, moonnaamathethu vyakthiparamaaya pravarthanangalekkurichu avabodhathinu. pravarthanatthinulla prosessing kazhchayumaayi bandhappett oru dorsal stream maathram kanakkakkaan kazhiyilla. drishya uthejakangalude prosessing ettavum sankeernamaayathil ninnu ettavum sankeernamaayathilekku oru rekheeya reethiyil pookunna vyakthamaaya oru shreniyundennum munbathe sidhaantham parayunnu. ennirunnaalum, oru attathulla shathangal ethir attathu ore prabhavam cheluthanam, ithu pareekshanaathmakamaayi nireekshikkaan kazhiyilla. paachu varkk-type modalil onniladhikam ventral, dorsal streamukal ulppedunna rund streamukaludeyum samaantharamaayi pravartthikkunna niravadhi vishwal prakriyakaludeyum samyojanam ithu theliyikkunnu.
ennirunnaalum, manushya masthishkathile kaazhchayude prakriyayekkurichu rund vyathyastha sidhaanthangal nilavilundenkilum, randum sweekarikkaan ippozhum saadhyamaan. pravarthanathinaayulla kazhchayum kaazhchaykkum idayil manassilaakkumbol budhimuttukal undaakunnuvenn sameepakaala pareekshanangal theliyikkunnu. iva randum thammil vyakthamaaya vyathyasam kandethuka prayaasamaan. kazhcha kooduthal ulkkollunna drishya midhyaadhaaranakal pravartthanatthil ganyamaaya phalangal nalkunnuvennu padanangal theliyikkunnu. mukalil soochippicha aadyathe sidhaanthathe ithu vyakthamaayi thallikkalayum, ithu kazhchayal nirddeshikkappetta pravartthanangal ellaayppozhum daaranayude kaaryam ozhivaakkunnu enna chinthaye soochippikkunnu. ennirunnaalum, aadyathe sidhaanthathinte durbalamaaya oru roopam ippozhum pariganikkaam. bodhapoorvamaaya daaranayude ulladakkam chilappol pravrithiye swaadheenikkumennu ithu prasthaavikkunnu, ennaal pravartthanatthil athinte swaadheenam kuravaanu. anumaanikkappedunna ventral, dorsal streamukalkk pravartthanatthinte maargganirddesham nalkaan kazhiyum, ennirunnaalum ventrally prosess cheytha vivarangal prakadamallaathathaayi kaanappedukayum perseptual jolikal prosess cheiyunnathil kooduthal ganyamaayi kaanappedukayum cheiyunnu. oraalkk ippozhum rund-stream sidhaantham sweekarikkaan kazhiyumennu sradhikkappettittundu, ennaal angane cheyyumbol atharamoru sidhaantham ippozhum perumattaparamaaya jolikalaal valareyadhikam roopappeduthiya paathakalilum pravarthanangalilum drishya vivarangal pankidunnathine amgeekarikkunnundennum oraal manassilakkanam.