Functional autonomy in the lateral eye of the horseshoe crab, Limulus polyphemus.

نویسندگان

  • M E Behrens
  • V J Wulff
چکیده

The interaction of light-initiated responses of sense cells within individual ommatidiawere investigated by recording simultaneously from two cells (subsequently identified) beforeand after the deliberate "destruction" of one cell by the passage of current. The slow responseof an eccentric or retinula cell could be altered or abolished without affecting the responseof the second cell (retinula), suggesting a measure of autonomy for the retinula cell slowresponse. The spike discharge was always suppressed when eccentric cells were treated butnot when retinula cells were treated with current. Resume—On etudie l'interaction des reponses a la lumiere des cellules sensorielles dans uneommatidie individuelle en enregistrant simultanement les reponses de deux cellules (identi-fiees ulterieurement) avant et apres "destruction" deliberee d'une des cellules par passage d'uncourant. La reponse lente d'une cellule excentrique ou de la retinule est alteree ou aboliesans affecter le reponse de la seconde cellule (de la retinule), ce qui suggere une mesure dePautonomie de la reponse lente de ces cellules. Les decharges sont toujours supprimees quandon soumet au courant les cellules excentriques, mais pas les cellules de la retinule. Zusammenfassung—Die Wechselwirkung lichtinduzierter Reaktionen zwischen Sinneszelleninnerhalb einzelner Ommatidien wurde durch gleichzeitige Registrierung von zwei Zellen(die anschlieBend identifiziert wurden), vor und nach der absichtlichen Zerstorung einer-Zelle durch StromfluB, untersucht. Die langsame Reaktion einer exzentrischenoderRetinulazelle konnte verandert oder aufgehoben werden, ohne die Reaktion der anderenZelle zu beeinflussen, was auf eine gewisses MaB von Unabhangigkeit fiir die langsameReaktion der Retinulazelle hindeutet. Die Spikeentladung wurde immer unterdriickt, wennexzentrische Zellen, aber nicht wenn Retinulazellen mit Strom behandelt wurden. Pe3K)Me — BMJIO HCCJieaoBaHo B3aHMO/ieHCTBHe Bbi3biBaeMbix CBCTOM peaKUHHHyBCTBHTeJIbHMX KJieTOK BHVTPH OTJjejIbHOrO OMMaTHflHH, nVTeM OflHOBpeMeHHOH3anHCH OT flByx KJieTOK (3aTevi HfleHTHijiHUHpoBaHHbix), flo H nocjie npeflHaMepeHHoro«noBpe3KfleHH«» OAHOH KJICTKH nponycKaHHeM nepe3 Hee 3JieKTpHHecKoro Toxa.MeflJieHHaa peaKUHH 3KCueHTpnnecKOH HJIH peTHHyjiflpHoii KJICTKH MOHCCT 6biTbH3MeHeHa HJIH ace coBceM noflaBJieHa 6e3 H3MeHeHH« peaKUHH flpyroft KJICTKH(peTHHyjia), HTO 3acTaBji5ieT jjyMaTb 06 H3BCCTHOH creneHH aBTOHOMHOCTH Mefl-jieHHbix peaKUHH peTHHyjiapHott KJICTKH. BbiCTpbiK pa3p«fl Bcerjja noflaBJiajica,ecnH TOK nponycxanca nepe3 3KCueHTpHHecKHe KJICTKH, HO He noflaBJiflJiCH, ecJiHTOK nponycKajica nepe3 peTHHyjiapHbie KJICTKH.

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عنوان ژورنال:
  • Vision research

دوره 7 3  شماره 

صفحات  -

تاریخ انتشار 1967