Characterisation of ocular fixation in humans by analysis of saccadic intrusions and fixation periods: A pragmatic approach
Eye movements during fixation were recorded in 55 normal subjects with ages ranging from 21 to 81 years. We analysed ocular fixation recordings using measurements of saccadic intrusion amplitudes and frequencies along with fixation periods and mean fixation displacement. Viewing conditions included...
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| Veröffentlicht in: | Vision research (Oxford) 2006-10, Vol.46 (21), p.3741-3747 |
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| creator | Canice McGivern, R. Mark Gibson, J. |
| description | Eye movements during fixation were recorded in 55 normal subjects with ages ranging from 21 to 81 years. We analysed ocular fixation recordings using measurements of saccadic intrusion amplitudes and frequencies along with fixation periods and mean fixation displacement. Viewing conditions included monocular, binocular and presence or absence of a visual fixation target. Visual feedback reduced the saccadic intrusion amplitudes but had no effect on fixation periods or mean fixation displacements. Binocular viewing had no effect on saccadic intrusion amplitudes, fixation periods or mean fixation displacements. A decrease in fixation periods and an increase in the number of saccadic intrusions with age was observed. This approach could be a clinically useful tool to quantify ocular fixation in neurological disease. |
| doi_str_mv | 10.1016/j.visres.2006.05.016 |
| format | Article |
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We analysed ocular fixation recordings using measurements of saccadic intrusion amplitudes and frequencies along with fixation periods and mean fixation displacement. Viewing conditions included monocular, binocular and presence or absence of a visual fixation target. Visual feedback reduced the saccadic intrusion amplitudes but had no effect on fixation periods or mean fixation displacements. Binocular viewing had no effect on saccadic intrusion amplitudes, fixation periods or mean fixation displacements. A decrease in fixation periods and an increase in the number of saccadic intrusions with age was observed. This approach could be a clinically useful tool to quantify ocular fixation in neurological disease.</description><subject>Adult</subject><subject>Aged</subject><subject>Aged, 80 and over</subject><subject>Biological and medical sciences</subject><subject>Eye movement</subject><subject>Female</subject><subject>Fixation displacement</subject><subject>Fixation period</subject><subject>Fixation, Ocular - physiology</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Humans</subject><subject>Male</subject><subject>Middle Aged</subject><subject>Perception</subject><subject>Psychology. Psychoanalysis. Psychiatry</subject><subject>Psychology. Psychophysiology</subject><subject>Psychophysics</subject><subject>Saccades</subject><subject>Saccadic intrusions</subject><subject>Vision</subject><subject>Vision Disorders - diagnosis</subject><subject>Vision, Binocular - physiology</subject><issn>0042-6989</issn><issn>1878-5646</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2006</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kEuL1EAUhQtRnHb0H4hko7vEeiSVigthaHRGGHAz--L2zY1dTR5t3WSw8c9bTRp656rg1HdOFZ8Q75UslFT286F4DhyJCy2lLWRVpPCF2ChXu7yypX0pNlKWOreNa27EG-aDlLKudPNa3CjrXOOU3oi_2z1EwJliYJjDNGZTl0249BCzLvxZozBm-2WAkbPdKYMR-hMHPoMMiNAGTMQcF04sp_v22jym3anlL9lddozwa0gpZnA8xglw_1a86qBnenc5b8XT929P24f88ef9j-3dY46lsXNutSGLtTKltspUDhtX7dAQaDKtbIyuFXVlYtUOCQmUtLYrrWkI69o5cys-rbPp1d8L8eyHwEh9DyNNC_vkwpa10wksVxDjxElt548xDBBPXkl_du4PfnXuz869rHwKU-3DZX_ZDdReSxfJCfh4AYAR-i7CiIGvnFNGN7ZO3NeVoyTjOVD0jIFGpDZEwtm3U_j_T_4Bxb-j1g</recordid><startdate>20061001</startdate><enddate>20061001</enddate><creator>Canice McGivern, R.</creator><creator>Mark Gibson, J.</creator><general>Elsevier Ltd</general><general>Elsevier Science</general><scope>6I.</scope><scope>AAFTH</scope><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>20061001</creationdate><title>Characterisation of ocular fixation in humans by analysis of saccadic intrusions and fixation periods: A pragmatic approach</title><author>Canice McGivern, R. ; Mark Gibson, J.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c436t-623e6c7134261358c985bc3ea2e3d093271ef4c431bcecea1066f4639ec77883</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2006</creationdate><topic>Adult</topic><topic>Aged</topic><topic>Aged, 80 and over</topic><topic>Biological and medical sciences</topic><topic>Eye movement</topic><topic>Female</topic><topic>Fixation displacement</topic><topic>Fixation period</topic><topic>Fixation, Ocular - physiology</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Humans</topic><topic>Male</topic><topic>Middle Aged</topic><topic>Perception</topic><topic>Psychology. Psychoanalysis. Psychiatry</topic><topic>Psychology. 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| ispartof | Vision research (Oxford), 2006-10, Vol.46 (21), p.3741-3747 |
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| source | MEDLINE; Elsevier ScienceDirect Journals; EZB-FREE-00999 freely available EZB journals |
| subjects | Adult Aged Aged, 80 and over Biological and medical sciences Eye movement Female Fixation displacement Fixation period Fixation, Ocular - physiology Fundamental and applied biological sciences. Psychology Humans Male Middle Aged Perception Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Psychophysics Saccades Saccadic intrusions Vision Vision Disorders - diagnosis Vision, Binocular - physiology |
| title | Characterisation of ocular fixation in humans by analysis of saccadic intrusions and fixation periods: A pragmatic approach |
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