Visual completion of partly occluded grating in infants under 1 month of age

Hideaki Kawabata, Jiro Gyoba, Hajime Inoue, Haruhiko Ohtsubo

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

Four groups of eight infants (3 weeks of age on average) were each habituated to one of four displays consisting of a grating of either low (0.4 cpd) or high (1.2 cpd) spatial frequency, whose central portion was covered up with a horizontal occluder which was either narrow (1.33°) or broad (4.17°). These habituation displays are referred to as LN (low spatial frequency grating and narrow occluder), LB (low and broad), HN (high and narrow), and HB (high and broad) displays. Posthabituation-test displays consisted of a complete grating (CG) of the same frequency as the habituated grating along with a separate grating (SG) whose central portion was replaced with a black gap of the same height as the occluder in the habituation displays. Infants habituated to the LN display looked significantly longer at the SG than the CG display during posthabituation-test trials. Infants habituated to the LB and HN displays looked at the CG and SG displays, almost equally. In contrast, infants habituated to the HB display looked longer at the CG than the SG display. These results show that infants under 1 month of age can perceive the continuation of the grating behind the occluder, and that their visual completion on habituation displays can be evoked according to the interaction between the spatial frequency of the grating and the occluder height. Copyright (C) 1999 Elsevier Science Ltd.

Original languageEnglish
Pages (from-to)3586-3591
Number of pages6
JournalVision Research
Volume39
Issue number21
DOIs
Publication statusPublished - 1999 Oct
Externally publishedYes

Keywords

  • Grating
  • Infant vision
  • Visual completion

ASJC Scopus subject areas

  • Ophthalmology
  • Sensory Systems

Cite this

Visual completion of partly occluded grating in infants under 1 month of age. / Kawabata, Hideaki; Gyoba, Jiro; Inoue, Hajime; Ohtsubo, Haruhiko.

In: Vision Research, Vol. 39, No. 21, 10.1999, p. 3586-3591.

Research output: Contribution to journalArticle

Kawabata, Hideaki ; Gyoba, Jiro ; Inoue, Hajime ; Ohtsubo, Haruhiko. / Visual completion of partly occluded grating in infants under 1 month of age. In: Vision Research. 1999 ; Vol. 39, No. 21. pp. 3586-3591.
@article{834bd63b4e1b45ebba16084145ab263f,
title = "Visual completion of partly occluded grating in infants under 1 month of age",
abstract = "Four groups of eight infants (3 weeks of age on average) were each habituated to one of four displays consisting of a grating of either low (0.4 cpd) or high (1.2 cpd) spatial frequency, whose central portion was covered up with a horizontal occluder which was either narrow (1.33°) or broad (4.17°). These habituation displays are referred to as LN (low spatial frequency grating and narrow occluder), LB (low and broad), HN (high and narrow), and HB (high and broad) displays. Posthabituation-test displays consisted of a complete grating (CG) of the same frequency as the habituated grating along with a separate grating (SG) whose central portion was replaced with a black gap of the same height as the occluder in the habituation displays. Infants habituated to the LN display looked significantly longer at the SG than the CG display during posthabituation-test trials. Infants habituated to the LB and HN displays looked at the CG and SG displays, almost equally. In contrast, infants habituated to the HB display looked longer at the CG than the SG display. These results show that infants under 1 month of age can perceive the continuation of the grating behind the occluder, and that their visual completion on habituation displays can be evoked according to the interaction between the spatial frequency of the grating and the occluder height. Copyright (C) 1999 Elsevier Science Ltd.",
keywords = "Grating, Infant vision, Visual completion",
author = "Hideaki Kawabata and Jiro Gyoba and Hajime Inoue and Haruhiko Ohtsubo",
year = "1999",
month = "10",
doi = "10.1016/S0042-6989(99)00060-7",
language = "English",
volume = "39",
pages = "3586--3591",
journal = "Vision Research",
issn = "0042-6989",
publisher = "Elsevier Limited",
number = "21",

}

TY - JOUR

T1 - Visual completion of partly occluded grating in infants under 1 month of age

AU - Kawabata, Hideaki

AU - Gyoba, Jiro

AU - Inoue, Hajime

AU - Ohtsubo, Haruhiko

PY - 1999/10

Y1 - 1999/10

N2 - Four groups of eight infants (3 weeks of age on average) were each habituated to one of four displays consisting of a grating of either low (0.4 cpd) or high (1.2 cpd) spatial frequency, whose central portion was covered up with a horizontal occluder which was either narrow (1.33°) or broad (4.17°). These habituation displays are referred to as LN (low spatial frequency grating and narrow occluder), LB (low and broad), HN (high and narrow), and HB (high and broad) displays. Posthabituation-test displays consisted of a complete grating (CG) of the same frequency as the habituated grating along with a separate grating (SG) whose central portion was replaced with a black gap of the same height as the occluder in the habituation displays. Infants habituated to the LN display looked significantly longer at the SG than the CG display during posthabituation-test trials. Infants habituated to the LB and HN displays looked at the CG and SG displays, almost equally. In contrast, infants habituated to the HB display looked longer at the CG than the SG display. These results show that infants under 1 month of age can perceive the continuation of the grating behind the occluder, and that their visual completion on habituation displays can be evoked according to the interaction between the spatial frequency of the grating and the occluder height. Copyright (C) 1999 Elsevier Science Ltd.

AB - Four groups of eight infants (3 weeks of age on average) were each habituated to one of four displays consisting of a grating of either low (0.4 cpd) or high (1.2 cpd) spatial frequency, whose central portion was covered up with a horizontal occluder which was either narrow (1.33°) or broad (4.17°). These habituation displays are referred to as LN (low spatial frequency grating and narrow occluder), LB (low and broad), HN (high and narrow), and HB (high and broad) displays. Posthabituation-test displays consisted of a complete grating (CG) of the same frequency as the habituated grating along with a separate grating (SG) whose central portion was replaced with a black gap of the same height as the occluder in the habituation displays. Infants habituated to the LN display looked significantly longer at the SG than the CG display during posthabituation-test trials. Infants habituated to the LB and HN displays looked at the CG and SG displays, almost equally. In contrast, infants habituated to the HB display looked longer at the CG than the SG display. These results show that infants under 1 month of age can perceive the continuation of the grating behind the occluder, and that their visual completion on habituation displays can be evoked according to the interaction between the spatial frequency of the grating and the occluder height. Copyright (C) 1999 Elsevier Science Ltd.

KW - Grating

KW - Infant vision

KW - Visual completion

UR - http://www.scopus.com/inward/record.url?scp=0032769936&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0032769936&partnerID=8YFLogxK

U2 - 10.1016/S0042-6989(99)00060-7

DO - 10.1016/S0042-6989(99)00060-7

M3 - Article

C2 - 10746128

AN - SCOPUS:0032769936

VL - 39

SP - 3586

EP - 3591

JO - Vision Research

JF - Vision Research

SN - 0042-6989

IS - 21

ER -