Demi-mwaka ndiyo nguva apo vanhu vanocherechedza kuchinja kwemafungiro uye kudonha kwesimba. Chirwere ichi chinozivikanwa nevakawanda uye nesainzi chinonzi Seasonal Affective Disorder Syndrome. Masayendisiti akaita tsvakiridzo nezvechirwere ichi nguva pfupi yadarika, muma1980s.
Munhu wose anoziva nezve "side effects" yechando kune vamwe vanhu. Kuora mwoyo, tsika yekuora mwoyo, mune dzimwe nguva, kunyange kupera simba kwekushanda kwepfungwa. Nekudaro, kutsvagurudza kutsva kuri kupikisa fungidziro yakakurumbira yemafungiro emagariro echando ane vanhu. Imwe yekuedza kwakadaro, yakaitwa pakati pevagari ve34 US, yakabudiswa mupepanhau Clinical Psychological Science. Akapikisa fungidziro chaiyo yekuti zviratidzo zvekuora mwoyo zvinowedzera mumwedzi yechando. Vatsvakurudzi, vakatungamirirwa naProfessor Stephen LoBello paYunivhesiti yeMontgomery, vakakumbira vatori vechikamu kuti vapedze mubvunzo pamusoro pezviratidzo zvekuora mwoyo mukati memavhiki maviri apfuura. Zvakakosha kuziva kuti vatori vechikamu vakazadza ongororo panguva dzakasiyana dzegore, izvo zvakabatsira kuburitsa mhedziso pamusoro pekutsamira kwemwaka. Kusiyana nezvaitarisirwa, zvigumisiro hazvina kuratidza hukama pakati pekuora mwoyo uye nguva yechando kana imwe nguva yegore.
Vanachiremba vetsinga, vachitungamirirwa naChristel Meyer kubva kuYunivhesiti yeBelgium, vakaita chidzidzo pakati pevarume nevakadzi vechidiki makumi maviri nemasere panguva dzakasiyana dzegore kuitira kuti vaunganidze uye vagadzirise ruzivo pamusoro pemafungiro avo, mamiriro avo emanzwiro uye kukwanisa kuisa pfungwa. Chiyero che melatonin chakayerwa zvakare uye akati wandei matambudziko epfungwa akatsanangurwa. Rimwe remabasa raive rekuyedza kusvinurira (concentration) nekudzvanya bhatani kana stopwatch ichingoonekwa pachiratidziri. Rimwe basa raive kuongorora RAM. Vatori vechikamu vakapihwa kurekodhwa kwezvikamu kubva mutsamba, zvichiridzwa serukova runoenderera. Basa raive rekuti atore chikamu aone kuti kurekodha kwaizotanga kudzokorora panguva ipi. Chinangwa chekuedza ndechekuratidza hukama pakati pekuita kwehuropi nemwaka.
Zvinoenderana nemhedzisiro, kusungirirwa, mamiriro emanzwiro uye mazinga emelatonin ainyanya kuzvimiririra mumwaka. Vatori vechikamu vakabatana nemabasa zvakaenzana zvakabudirira zvisinei neiyi kana mwaka iwoyo. Panyaya yebasa rehuropi, vatori vechikamu 'neural chiitiko chaive chepamusoro muchirimo uye chakaderera mukudonha. Basa rehuropi munguva yechando rakaonekwa paavhareji. Kurudziro yekuti kushanda kwepfungwa dzedu kunowedzera munguva yechando kunotsigirwa netsvagurudzo kubva mukupera kwema90s. Vatsvagiri vepaYunivhesiti yeTromsø kuNorway vakaita ongororo kune vatori vechikamu makumi matanhatu neshanu pane akasiyana mabasa munguva yechando nechirimo. Nzvimbo yekuedza kwakadaro yakasarudzwa zvakanaka kwazvo: tembiricha muzhizha nechando zvine musiyano wakakosha. Tromsø inowanikwa mamaira anopfuura 62 kuchamhembe kweArctic Circle, zvinoreva kuti hapana kana chiedza chezuva munguva yechando, uye muzhizha, pane kudaro, hapana husiku hwakadaro.
Mushure mekutevedzana kwekuedza, vaongorori vakawana mutsauko mudiki mumwaka wemwaka. Nekudaro, izvo zvakakosha izvo zvaive nemusiyano wakakura wakava mukana ... chando! Munguva yechando, vatori vechikamu vakaita zvirinani mukuyedzwa kwekumhanya kwekuita, pamwe nemuyedzo weStroop, pazvinofanirwa kudoma ruvara rweinki iyo izwi rinonyorwa nekukurumidza sezvinobvira (semuenzaniso, izwi rekuti "blue". ” yakanyorwa neingi tsvuku, nezvimwewo). Muedzo mumwe chete wakaratidza mhedzisiro yakanaka muzhizha, uye ndiko kutsetseka kwekutaura.
Mukupfupisa, tinogona kufungidzira kuti. Vazhinji vedu, nokuda kwezvikonzero zviri pachena, tinokuwana kwakaoma kutsungirira nguva yechando namadekwana ayo akareba erima. Uye mushure mekuteerera kwenguva yakareba pamusoro pekuti chando chinokonzera sei kuneta uye kusuruvara, tinotanga kuzvitenda. Zvisinei, tine chikonzero chekutenda kuti nguva yechando pachayo, sechiitiko, haisi chete chikonzero chekushaya simba kwehuropi, asiwo nguva iyo uropi hunoshanda mune imwe nzira yakawedzerwa.