Investigation of summation mechanisms in the pupillomotor
system

J 2014

Investigation of summation mechanisms in the pupillomotor system

SKORKOVSKÁ, Karolína; Helmut WILHELM; Holger LÜDTKE; Barbara WILHELM; Anne KURTENBACH et. al.

Základní údaje

Originální název

Investigation of summation mechanisms in the pupillomotor system

Autoři

SKORKOVSKÁ, Karolína (203 Česká republika, garant, domácí); Helmut WILHELM (276 Německo); Holger LÜDTKE (276 Německo); Barbara WILHELM (276 Německo) a Anne KURTENBACH (276 Německo)

Vydání

Graefes Archive for Clinical and Experimental Ophthalmology, New York, Springer, 2014, 0721-832X

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

30200 3.2 Clinical medicine

Stát vydavatele

Spojené státy

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 1.908

Kód RIV

RIV/00216224:14110/14:00078357

Organizační jednotka

Lékařská fakulta

DOI

https://doi.org/10.1007/s00417-014-2677-4

UT WoS

000338492500017

EID Scopus

2-s2.0-84904319391

Klíčová slova anglicky

Pupil; Receptive field; Pupil perimetry; Campimetry

Štítky

EL OK

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 15. 1. 2015 13:09, Soňa Böhmová

Anotace

V originále

To ascertain whether the pupillary response amplitude shows spatial summation of responses with increasing size of retinal stimulation, and to examine the pupillary responses for evidence of surround inhibition, analogous to that found in the receptive fields of the retinal ganglion cells. By means of infrared-video-pupillography, the pupil reaction to stimuli of increasing size (1-15A degrees) was measured in 30 normal subjects. Four different retinal locations (0A degrees, 20A degrees and 40A degrees eccentricity on the upper temporal retina and 20A degrees eccentricity on the lower nasal retina) were examined at four different stimulus luminances (17, 47, 87 and 140 cd/m(2)). When the average log amplitude of the pupil light reaction from the 30 subjects is plotted as a function of the log area of the stimulus, a bi-linear response is observed, which is most pronounced for the two higher luminances. The intersection points of the two linear responses are 2.01A degrees in the fovea, 2.80A degrees at 20A degrees upper temporal retina, 2.85A degrees at 20A degrees lower nasal retina and 4.86A degrees at 40A degrees upper temporal retina. This study suggests that pupillomotor summation areas consist of both summation and inhibitory zones. They show larger diameters than receptive fields of retinal ganglion cells and do not appear to reflect pupillary summation areas of the pretectal olivary nucleus luminance neurons.

Citovat

SKORKOVSKÁ, Karolína; Helmut WILHELM; Holger LÜDTKE; Barbara WILHELM a Anne KURTENBACH. Investigation of summation mechanisms in the pupillomotor system. Graefes Archive for Clinical and Experimental Ophthalmology. New York: Springer, 2014, roč. 252, č. 7, s. 1155-1160. ISSN 0721-832X. Dostupné z: https://doi.org/10.1007/s00417-014-2677-4.

@article{1216654,
   author = {Skorkovská, Karolína and Wilhelm, Helmut and Lüdtke, Holger and Wilhelm, Barbara and Kurtenbach, Anne},
   article_location = {New York},
   article_number = {7},
   doi = {https://doi.org/10.1007/s00417-014-2677-4},
   keywords = {Pupil; Receptive field; Pupil perimetry; Campimetry},
   language = {eng},
   issn = {0721-832X},
   journal = {Graefes Archive for Clinical and Experimental Ophthalmology},
   title = {Investigation of summation mechanisms in the pupillomotor system},
   volume = {252},
   year = {2014}
}

TY  - JOUR
ID  - 1216654
AU  - Skorkovská, Karolína - Wilhelm, Helmut - Lüdtke, Holger - Wilhelm, Barbara - Kurtenbach, Anne
PY  - 2014
TI  - Investigation of summation mechanisms in the pupillomotor system
JF  - Graefes Archive for Clinical and Experimental Ophthalmology
VL  - 252
IS  - 7
SP  - 1155-1160
EP  - 1155-1160
PB  - Springer
SN  - 0721832X
KW  - Pupil
KW  - Receptive field
KW  - Pupil perimetry
KW  - Campimetry
N2  - To ascertain whether the pupillary response amplitude shows spatial summation of responses with increasing size of retinal stimulation, and to examine the pupillary responses for evidence of surround inhibition, analogous to that found in the receptive fields of the retinal ganglion cells. By means of infrared-video-pupillography, the pupil reaction to stimuli of increasing size (1-15A degrees) was measured in 30 normal subjects. Four different retinal locations (0A degrees, 20A degrees and 40A degrees eccentricity on the upper temporal retina and 20A degrees eccentricity on the lower nasal retina) were examined at four different stimulus luminances (17, 47, 87 and 140 cd/m(2)). When the average log amplitude of the pupil light reaction from the 30 subjects is plotted as a function of the log area of the stimulus, a bi-linear response is observed, which is most pronounced for the two higher luminances. The intersection points of the two linear responses are 2.01A degrees in the fovea, 2.80A degrees at 20A degrees upper temporal retina, 2.85A degrees at 20A degrees lower nasal retina and 4.86A degrees at 40A degrees upper temporal retina. This study suggests that pupillomotor summation areas consist of both summation and inhibitory zones. They show larger diameters than receptive fields of retinal ganglion cells and do not appear to reflect pupillary summation areas of the pretectal olivary nucleus luminance neurons.
ER  -

SKORKOVSKÁ, Karolína; Helmut WILHELM; Holger LÜDTKE; Barbara WILHELM a Anne KURTENBACH. Investigation of summation mechanisms in the pupillomotor system. \textit{Graefes Archive for Clinical and Experimental Ophthalmology}. New York: Springer, 2014, roč.~252, č.~7, s.~1155-1160. ISSN~0721-832X. Dostupné z: https://doi.org/10.1007/s00417-014-2677-4.

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