Qhov sib txawv tseem ceeb ntawm X thiab Y ganglion cell receptive fields yog X ganglion cell receptive fields qhia ib qho yooj yim centre-surround lub koom haum whereas Y ganglion cell receptive teb qhia ib tug complex lub koom haum nrog peb concentric cheeb tsam.
Lub retina yog ib txheej nyias ntawm cov ntaub so ntswg nyob tom qab ntawm lub qhov muag. Nws converts lub teeb rau hauv neural signals. Yuav kom ua tau li ntawd, muaj peb txheej ntawm cov neurons hauv retina. Ganglion hlwb yog cov neurons tam sim no nyob rau hauv peb txheej ntawm cov ntaub so ntswg neuron. Ganglion hlwb tau txais cov khoom siv los ntawm cov hlwb bipolar lossis amacrine hlwb thiab xa cov ntaub ntawv mus rau lub hlwb qhov chaw pom. Muaj peb chav kawm ntawm cov hlwb pob txha caj qaum: W-ganglion, X-ganglion thiab Y-ganglion hlwb. Txhua lub hlwb ganglion muaj qhov chaw txais tos. Lawv tsau nyob rau hauv qhov chaw thiab immobile. Receptive fields raug muab qhab nia raws li qhov rhiab heev. Kev txais cov teb yog loj dua tab sis tsis txhob ncua tshaj 1 hli inch.
X Ganglion Cell Receptive Fields yog dab tsi?
X Ganglion hlwb yog ib chav kawm ntawm cov hlwb hlwb hlwb. Cov hlwb no muaj ntau heev hauv retina, thiab lawv hu ua brisk sustained cells. Lawv muaj qhov nqaim me me. Morphologically, cov hlwb yog beta hlwb. X ganglion cell receptive fields qhia ib lub koom haum nyob ib puag ncig yooj yim. Ntxiv mus, X ganglion hlwb qhia cov lus teb tawm, tsis zoo li Y ganglion hlwb.
Daim duab 01: Ganglion Cell Receptive Fields
Y Ganglion Cell Receptive Fields yog dab tsi?
YY Ganglion hlwb yog lwm chav kawm ntawm cov hlwb hlwb hlwb. Nyob rau hauv kev sib piv rau X ganglion hlwb, Y ganglion hlwb yog txawv vim lawv loj axon diameters thiab ceev conduction sij hawm. Y ganglion hlwb tseem hu ua 'brisk transient' cells. Ntxiv mus, lawv yog morphologically alpha hlwb. Y ganglion hlwb yog sparsely faib thiab muaj ntau qhov chaw txais tos. Tsis tas li ntawd, Y ganglion cell receptive fields qhia ib lub koom haum nyuaj nrog peb cheeb tsam concentric: ib cheeb tsam hauv nruab nrab ntawm cov lus teb hauv nruab nrab, ib cheeb tsam ntawm kev sib xyaw centre-type thiab ib puag ncig-hom teb, thiab thaj tsam ntawm ib puag ncig-hom teb. Y ganglion hlwb qhia tsis-linearity hauv cov lus teb.
Dab tsi zoo sib xws ntawm X thiab Y Ganglion Cell Receptive Fields?
- X thiab Y ganglion cell receptive teb yog ib feem ntawm qhov chaw hnov qab uas tuaj yeem cuam tshuam cov lus teb neuronal thaum txhawb nqa.
- Lawv pom nyob rau hauv lub retina.
- Lawv yog tsim los ntawm cov tswv yim los ntawm tag nrho cov photoreceptors (los ntawm ntau tus pas nrig thiab cones).
- Ntxiv mus, lawv tau teem rau hauv nruab nrab disk.
- Qhov no ganglion cell receptive foob yuav kaw tag nrho cov synapsing network ntawm photoreceptors, bipolar, kab rov tav thiab amacrine hlwb uas converge rau lawv.
Qhov txawv ntawm X thiab Y Ganglion Cell Receptive Fields yog dab tsi?
Qhov sib txawv tseem ceeb ntawm X thiab Y ganglion cell receptive teb yog tias X ganglion cell receptive fields qhia ib qho yooj yim centre-surround lub koom haum thaum Y ganglion cell receptive teb qhia ib tug complex lub koom haum nrog peb concentric cheeb tsam. Ntxiv mus, X ganglion cell receptive fields yog nqaim thiab Y ganglion cell receptive teb yog dav.
Cov hauv qab no infographic tabulates ib sab ntawm qhov sib txawv ntawm X thiab Y ganglion cell txais teb.
Summary – X vs Y Ganglion Cell Receptive Fields
X Ganglion cell receptive fields yog qhov nqaim nqaim uas qhia tau yooj yim lub koom haum nyob ib puag ncig. Nyob rau hauv sib piv, Y Ganglion cell receptive teb yog dav thiab qhia ib tug complex lub koom haum nrog peb concentric cheeb tsam. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm X thiab Y ganglion cell receptive teb. Ntxiv mus, X ganglion hlwb qhia linearity nyob rau hauv cov lus teb, thaum Y ganglion hlwb qhia tsis-linearity nyob rau hauv teb.
