Laterality Kuma Crossed Laterality: Menene Su?

Wadatacce

• Me yasa kowane mutum yana da fifiko idan yazo yin amfani da wani ɓangaren jikinsu?
• Menene laterality da ketare gefe?
• Giciye na gefe, daidaiton daidaituwa da mamayewa
• Me yasa akwai tsallake -tsallake?

Me yasa kowane mutum yana da fifiko idan yazo yin amfani da wani ɓangaren jikinsu?

Jikin ɗan adam, kamar na kusan dukkanin jikin da ke cike da tsarin rayuwar dabbobin, yana bi alamu na daidaitawa.

Muna da hannaye biyu, kafafu biyu, idanu biyu da hanci a tsakiyar tsakiyar mu, kuma ana maimaita irin wannan dabarar cikin tsarin kusan dukkan gabobin mu. An daidaita mu don ganewa da yin aiki iri ɗaya daidai da hagu da dama.

Menene laterality da ketare gefe?

Kamar yadda zaku yi tsammani, waɗannan ƙa'idodin suna cikin tsarin kwakwalwar mu. Muna da sassan kwakwalwa guda biyu, kowanne a hagu da dama, waɗanda wani abu ne kamar hotunan juna na juna… aƙalla da ido mara kyau. A zahiri, duka sassan biyu sun bambanta sosai a matakin salula kuma, a zahiri, suna da alhakin matakai daban -daban. Dukanmu mun san wannan ra'ayin da ke cewa madaidaicin duniya mai hankali ne kuma mai nazari, yayin da dama ke da tausayawa kuma tana amsawa ta hanya ta musamman ga kiɗa.

Waɗannan bambance -bambancen dabara suna nufin cewa don wasu ayyuka muna da gefe ɗaya na jikinmu wanda ke amsa daban -daban ga sabanin sa, tunda kowane ɗayan waɗannan rabi yana da alaƙa da ɗaya daga cikin ɓangarorin biyu na kwakwalwa. Misali, yawancinmu muna da rinjaye kuma muna ɗaukar kanmu dama, yayin da muke amfani da haƙƙinmu kusan komai. Duk da haka, wannan gaskiyar ba ta nufin muna da rabin jikin da ya mamaye gaba ɗaya. Abin sha'awa, yana yiwuwa mutum ya mallaki hannun dama na dama, amma akasin haka na iya zama gaskiya ga idanunsu ko ƙafafunsu. Waɗannan su ne lokuta na ƙetare gefe.

Giciye na gefe, daidaiton daidaituwa da mamayewa

A yadda aka saba muna magana ne game da gefe ɗaya, saboda mutanen da babban hannayensu ɗaya ne a gefe guda suna da ikon samun rinjayen sauran gabobin jikinsu da hankulansu a haɗe a wancan rabin. Don haka, lokacin da muke magana akan gefe muna yana nufin rinjaye daban -daban da ke cikin mutum, kuma saitin waɗannan rinjaye za su kasance abin da ke bayyana ko akwai giciye ko daidaiton daidaituwa.

A kowane hali, tsallake -tsallake na gefe shine wani nau'in juzu'i, kuma kasancewar wani nau'in ko wani sakamakon sakamako ne na tsarin jijiyoyinmu. Wannan yana nufin cewa yana cikin haɗin haɗin sassan jikinmu daban -daban daga jijiyoyin da dole ne a nemi musabbabin wani ko wani nau'in na gefe, kuma wannan kuma ana iya bayyana shi ta bangarorin jikin da abin ya shafa. A wannan yanayin, akwai daban -daban azuzuwan rinjaye waɗanda ke aiki azaman ma'auni don ayyana nau'in ƙarshen:

1. Manual rinjaye: an bayyana shi ta hanyar mamaye ɗaya ko ɗayan hannun lokacin ɗaukar abubuwa, rubutu, taɓawa, da sauransu.
2. Kafar rinjaye: an ayyana ta hanyar mamaye ɗaya ko ɗayan ƙafar don ƙwanƙwasawa, buga ƙwallo, tsayawa akan kafa ɗaya, da sauransu.
3. Mamallakin Auditory : son amfani da kunne ɗaya ko ɗayan don sauraro, saka belun kunne, da sauransu.
4. Ocular ko na gani rinjaye: an ayyana ta da babban ido lokacin kallon ta.

Me yasa akwai tsallake -tsallake?

Hanyoyin juyayi waɗanda wani ko wani nau'in na gefe ke faruwa ba a san su sosai ba, ba kuma me yasa wasu lokuta lokuta na ketare ke faruwa ba, tunda yawancin shine cewa akwai kama. A kowane hali, tsallake-tsallake zai zama hujja cewa babu babban cibiyar tsare-tsare da ke kula da daidaita madafun iko daban-daban ko kuma, idan akwai, aikinsa ko yana da mahimmanci.

A kowane hali, a halin yanzu an yi imanin cewa tsallake -tsallake na iya ba da wasu matsaloli yayin daidaita sassan jikin da rinjayensu ya bambanta, kamar lokacin rubutu. Bincike a wannan batun shine rasa, amma an dauke shi cikin taka tsantsan don yin la'akari da tsallake-tsallake a matsayin abin haɗari a cikin bayyanar cututtukan ilmantarwa a cikin yara.

A kowane hali, kamar yadda tsarin haɗin gwiwa tsakanin neurons wanda rinjaye ya dogara da shi yana da filastik (wato, daidaitawa gwargwadon ilmantarwa da gogewar mu), ba kawai ƙaddarar halittu ke ƙaddara ba. hali kuma yana tasiri. koya, al'ada, halaye, da sauransu.

Ƙetarewar giciye ba banda ga wannan doka, sabili da haka yana yiwuwa a koya don rage tasirin matsanancin rinjaye don amfani da ɓangaren homologous na jiki a cikin rabin, a wannan yanayin ci gaba da magana tilasta gefe .