Zawng zawng inbiakual tha siam

A laihawl chhungah biakual pakhat vawngin ziah la, a biakual dan chu a hun takin en rawh. A man a awm lo, sign up a ngai lo.

Helibrain pawl ziakRobert(English), biophysics zirna PhD zirlaia awmten enfiah tawh a chhuahA hnuhnunga enfiah ni

I score chhiar dan

  • Biakualna: a tha berin inmil biakualin i ziahzawh line a hlatna average, biakual radius-a teh chuan, 100% aṭanga paih. Average-a 2% chuan line a khengbet chuan 98% score a nei.
  • I line rawngte: line chu biakualah a awmna hmunah hian, hian lamah a kal zel chuan a hlatna hmunah sen lam thlengin a danglam.
  • Biakual thlirhmun: i siamna a tha berin inmil biakual a ni. I line chu a hnaih ang zêlin score a sang ang.
  • I tha ber: browser-ah i score sang ber, touch leh mouse tan hran hran vawng a ni, a chhan chu kutzung leh mouse-in a danglam takin an ziah vâng a ni.
  • Ziah kalna lam: clock lam emaw clock kalh lam emaw. US-a mi tam zawkin clock kalh lamah an ziah; Japan-ah mi tam zawkin clock lamah an ziah [1].

Kut hmangin biakual tha tak i siam thei em?

A tha famkim lo, mahse a hnaih thei. Kut hmanga siam biakual chu a khengbet deuh zel, a chhan chu kutin a kualnaah a kalna chu a tlêm a chak a, a chhan danglam zel vâng a ni [2]. Kan tehnaah, a biakual aṭanga average-a 2% hlat line chuan 98% score a nei. Canada-a math zirtirtu biakual video viral tak chu blogger pakhat chhutnaah 99.7% vel biakual a ni [3].

Thu pawimawh tê

  • Ziah kalna lam chu khawiah i lo seilian tihah a innghat: Google Quick, Draw! infiamna-a US ziahna 50,000 vel zinga 86% chu clock kalh lamah an ziah; Japan ziahna 800 vel zinga 80% chu clock lamah an ziah [1].
  • Ziah danin a siam: Japan naupangte chu school an kal zelnaah clock lam ziah an pung; US naupangte chu clock kalh lamah an pung; US-a cheng Japan naupangte chu clock lam ziah an tlêm [4].
  • Kut chak dan dan: kawng kual kawng zawngah kut chu a kal tlêm a, kawng phlat deuhah a kal chak ("two-thirds power law"). Biakualah kawng kualna chu hmun tinah a inang, chuvângin dan chuan chakna intluk a ni tih a sawi [2][5].
  • "Khawvel champion": biakual video viral-a math zirtirtu chuan a "khawvel kut hmanga biakual siam champion" tih hming chu a class-te hnênah nuihza thu a sawi a ni tih a sawi leh [6].
  • Damdanna chhinchhiahna a ni lo: 1970s-a biakual clock lam ziah chu rilru natna vaukhanna a ni tih ngaihdan chu zirna hnuhnung zawngte chuan thlawpna an hmuh lo [7].

Biakual endikna hnathawh dan

  1. Ziah rawh. I kutzung (emaw mouse button) chu hmun engah pawh dah la, dot velah vawngin stroke khat hmangin biakual pakhat ziah rawh.
  2. A hun takin en rawh. A kualna hmun thenkhat i zawh tawh chuan, biakualna chu a laihawlah a lang a, line rawng a thlak.
  3. Chhuah rawh. I zawh chuan, a tha berin inmil biakual chu thlirhmunin a lang ang a, i ziahna score pek a ni ang.

Chhiar tel theih tûrin, ziahna chuan 320° tal a kual tawh, a bulna hmun hnaihah a tawp, a lian tawk (ziahna hmun zau zawng atanga radius chu 15% tal) leh sekond 30 aia rei lo a ni tur a ni. Zawng khat chauh, ka ngen e. Least squares hmangin i point-te chu biakualah kan inmil tir a, aṭanga average hlatna kan teh. Kutzung biakual chu kutzung biakual nen chauh kan khâikhin.

Eng vângin nge biakual famkim siam a harsa?

Biakual ziahnaah chuan i bah, kutzawn, kutzung leh kutzungte an thawk tlâng a ngai a, chumi hun chhung chuan kalna lam a danglam reng. I kut chu kawng kual nen a kal chak a tlêm a, a kal chak a pung a ni [2]; chakna thlakna tinah chuan pawn lam emaw chhung lam emaw panin a pên theihna hun a awm. Phone-ah chuan i kutzungin i ziah line a khuh bawk. Mouse chu biceps pumpui hmangin a che a, chuvângin mouse leh kutzung biakual score chu a danglam.

Biakual zawng zawng tha zawk siam dan

  • Lian zawkin ziah la, kut pum hmang rawh. Kutzung chauh hmanga biakual tê siam chuan a khengbet nasa zawk.
  • Kalna chakna intluk rawh. A kal tlêm lutuk suh: ziah tlêm lutuk chuan kut a khawih.
  • A laihawl dot thlir la, line thlir suh. A laihawl aṭanga hlatna inang reng vawng hi hna pawimawh ber a ni.
  • Zawng chu nuam takin khar rawh. Biakual tam tak chuan a tawp lamah score a tlêm, mi tam takin a bulna hmun an thlen thuai tum vâng a ni.

He endikna hian eng nge a hrilh theih leh theih loh?

Biakual endikna hi kut control hman thiamna infiamna nuam tak a ni. I score chu i device, screen lian zawng, kutzung, pen emaw mouse emaw i hman, leh i practice-ah a innghat. Doctor endikna emaw kut khawih test emaw a ni lo; doctor-te chuan spiral ang chi ziahna dang an hmang [8]. Ziah kalna lam chuan i damdanna chungchang engmah a sawi lo.

Zawhna leh chhanna ziah tam ber

Kut hmangin biakual famkim siam theih a ni em?

Kut hmanga ziah biakual chu a biakual famkim lo, mahse mi tam takin an hnaih thei. Helibrain biakual endiknaah biakualna chu i line average-a khengbet zat chu 100% aṭanga paih a ni; chuvângin average-a 2% hlat line chuan 98% score a nei. 100% famkim thlen nân chuan khengbetna engmah nei lo line a ngai.

Mi tam zawkin clock lamah emaw clock kalh lamah emaw biakual an ziah?

I lo seilianna hmunah a innghat. Google Quick, Draw! ziahnaah US biakual 50,000 vel zinga 86% chu clock kalh lamah an ziah; Japan biakual 800 vel zinga 80% chu clock lamah an ziah [1]. I kut zawh zawng aiin ziah dan thiamna hian a pawimawh zawk niin a lang [4].

Ka biakualna score engtin nge chhut a nih?

Helibrain biakual endikna chuan i line point zawng zawng hmangin biakual a inmil ber (least-squares fit) a siam a, chutah point tin chu biakual aṭanga eng chen nge a hlat a teh. Average hlatna, biakual radius-a teh chu i khengbetna a ni; biakualna chu khengbetna paih a nihna 100% a ni. Oval anga pian, zawnna emaw inchheh chhuah emaw chuan score a tlêm tir.

Eng vângin nge phone leh computer-ah ka score a danglam?

Kutzung leh mouse chuan taksa peng leh chetzia danglam an hmang a, phone screen pawh a tê zawk. Chuvângin Helibrain biakual endikna chuan touch leh mouse score tha ber chu hranin a vawng a, input chi thuhmun chhunga result-te chauh a khâikhin.

Compass tel lovin engtin nge biakual tha tak siam?

I kut chu a laihawl lamah phiat la, i kutzung tê emaw i kutzung emaw pivot atan hmang la, lehkha emaw i kut emaw chu a velah her rawh. Kut hmanga ziah chuan biakual lian zawk tak, kut pum hmangin kalna chakna intlukin ziah rawh. Endiknaah practice la, i line rawngte thlir chungin khawiah nge i pên tih hria rawh.

Helibrain biakual endikna hi a man a awm lo tak em?

A ni. Endikna leh i result famkim chu man a awm lo: sign up ngai lo, email ngai lo, payment ngai lo. Helibrain chuan free plan leh plan man pek ngai nei app hmangin sum a siam; endikna hman nân app i mamawh lo.

Endikna dang inzawmte

Man pek ngai lo rilru endikna 43 zawng zawng en rawh

Nitin hei hi tih zir duh em? Helibrain app (tunah chuan English tawngin chauh) -ah man pek ngai lo plan leh man pek plan a awm.

He phek hi hnâr anga târ lang rawh: Zawng zawng inbiakual tha siam. Helibrain. 2026. https://helibrain.com/lus/draw-a-perfect-circle. CC BY 4.0.

How this test works

This game tests how steady and even your hand is. Put your finger or the mouse button down and draw one circle around the dot in a single stroke. When you lift, we fit the best circle to your line and measure how far your line strays from it, on average. Your roundness score is 100% minus that average wobble, so a line that wobbles by 2% scores 98%. Motor-control labs have measured hand-drawn curves like this since the 1980s.

Version 1 · Cite this test:

Helibrain (2026). Draw a perfect circle, v1. https://helibrain.com/draw-a-perfect-circle/methods

Full method →

Sources

  1. Sonnad N (2017). How do you draw a circle? We analyzed 100,000 drawings to show how culture shapes our instincts. Quartz, 15 June 2017 (analysis of Google's Quick, Draw! data). qz.com/994486/the-way-you-draw-circles-says-a-lot-about-you/
  2. Lacquaniti F, Terzuolo C, Viviani P (1983). The law relating the kinematic and figural aspects of drawing movements. Acta Psychologica 54(1–3):115–130. doi.org/10.1016/0001-6918(83)90027-6
  3. Höhle M (2018). Judging freehand circle drawing competitions. Blog post, 31 July 2018. mhoehle.github.io/blog/2018/07/31/circle.html
  4. Amenomori Y, Kono A, Fournier J, Winer GA (1997). A cross-cultural developmental study of directional asymmetries in circle drawing. Journal of Cross-Cultural Psychology 28(6):730–742. doi.org/10.1177/0022022197286005
  5. Fraser DS, Di Luca M, Cook JL (2025). Biological kinematics: a detailed review of the velocity-curvature power law calculation. Experimental Brain Research 243(5):107. doi.org/10.1007/s00221-025-07065-0
  6. Wikipedia. Alexander Overwijk. en.wikipedia.org/wiki/Alexander_Overwijk (checked 4 November 2026)
  7. Boake C, Salmon PG, Carbone CR (1983). Torque, lateral preference, and cognitive ability in primary-grade children. Journal of Abnormal Child Psychology 11(1):77–83. doi.org/10.1007/BF00912179
  8. Wang S, Schwirtlich T, et al. (2025). Clinical applications and measurement properties of the digitized Archimedes spiral drawing test: a scoping review. Movement Disorders Clinical Practice 12(11):1742–1755. doi.org/10.1002/mdc3.70278

He laman thuziak hi engtin nge siam a nih: chunglam zirna te atangin Helibrain pawl-in a ziak a, Robert(English) (biophysics zirna PhD zirlaia awm) chuan 11/4/2026-ah a enfiah. Hnar thute a thlak a nih chuan kan tidanglam thin.