J 2019

Influence of artificially generated interocular blur difference on fusion stability under vergence stress

DOSTÁLEK, Miroslav, Jan HEJDA, Karel FLIEGEL, Michaela DUCHÁČKOVÁ, Ladislav DUŠEK et. al.

Basic information

Original name

Influence of artificially generated interocular blur difference on fusion stability under vergence stress

Authors

DOSTÁLEK, Miroslav (203 Czech Republic, guarantor, belonging to the institution), Jan HEJDA (203 Czech Republic), Karel FLIEGEL (203 Czech Republic), Michaela DUCHÁČKOVÁ (203 Czech Republic), Ladislav DUŠEK (203 Czech Republic, belonging to the institution), Jiří HOZMAN (203 Czech Republic), Tomáš LUKEŠ (203 Czech Republic) and Rudolf AUTRATA (203 Czech Republic, belonging to the institution)

Edition

Journal of Eye Movement Research, INT GROUP EYE MOVEMENT RESEARCH, 2019, 1995-8692

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

50302 Education, special

Country of publisher

Switzerland

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 1.404

RIV identification code

RIV/00216224:14110/19:00110941

Organization unit

Faculty of Medicine

DOI

UT WoS

000523260000004

Keywords in English

binocular fusion effieciency; vergence demand; blur balance; blur conflict; suppression; binocular rivalry; signal strengh; natural image statistics

Tags

Tags

International impact, Reviewed
Změněno: 21/4/2020 12:00, Mgr. Tereza Miškechová

Abstract

V originále

The stability of fusion was evaluated by its breakage when interocular blur differences were presented under vergence demand to healthy subjects. We presumed that these blur differences cause suppression of the more blurred image (interocular blur suppression, IOBS), disrupt binocular fusion and suppressed eye leaves its forced vergent position. During dichoptic presentation of static grayscale images of natural scenes, the luminance contrast (mode B) or higher-spatial frequency content (mode C) or luminance contrast plus higher-spatial frequency content (mode A) were stepwise reduced in the image presented to the non-dominant eye. We studied the effect of these types of blur on fusion stability at various levels of the vergence demand. During the divergence demand, the fusion was disrupted with approximately half blur than during convergence. Various modes of blur influenced fusion differently. The mode C (isolated reduction of higher-spatial frequency content) violated fusion under the lowest vergence demand significantly more than either isolated or combined reduction of luminance contrast (mode B and A). According to our results, the image´s details (i.e. higher-spatial frequency content) protects binocular fusion from disruption by the lowest vergence demand.