Evidence map›Paper›PMID 26035820›Full record

ArticlePloS one2015

Simultaneous recordings of human microsaccades and drifts with a contemporary video eye tracker and the search coil technique.

Michael B McCamy, Jorge Otero-Millan, R John Leigh, Susan A King, Rosalyn M Schneider, Stephen L Macknik, Susana Martinez-Conde

Abstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

27 citing papers in PubMed.

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  17. VisME: Visual Microsaccades Explorer.Journal of eye movement research · 2019
    Article
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors.

Michael B McCamyBarrow Neurological Institute, Phoenix, Arizona, United States of America.
Jorge Otero-MillanBarrow Neurological Institute, Phoenix, Arizona, United States of America; Department of Signal Theory and Communications, University of Vigo, Vigo, Spain; Department of Neurology, Johns Hopkins University, Baltimore, Maryland, United States of America.
R John LeighVeterans Affairs Medical Center, Case Western Reserve University, Cleveland, Ohio, United States of America.
Susan A KingVeterans Affairs Medical Center, Case Western Reserve University, Cleveland, Ohio, United States of America.
Rosalyn M SchneiderVeterans Affairs Medical Center, Case Western Reserve University, Cleveland, Ohio, United States of America.
Stephen L MacknikSUNY Downstate Medical Center, Brooklyn, New York, United States of America; Barrow Neurological Institute, Phoenix, Arizona, United States of America.
Susana Martinez-CondeSUNY Downstate Medical Center, Brooklyn, New York, United States of America; Barrow Neurological Institute, Phoenix, Arizona, United States of America.

Funding

OCULAR MOTOR DISORDERSR01EY006717 · NEI · CASE WESTERN RESERVE UNIVERSITY · PI LEIGH, RICHARD JOHN · 1987 to 2012
$1.8M
NEI NIH HHS R01 EY006717NEI NIH HHS R01 EY06717
6 · The paper itself

Abstract

Human eyes move continuously, even during visual fixation. These "fixational eye movements" (FEMs) include microsaccades, intersaccadic drift and oculomotor tremor. Research in human FEMs has grown considerably in the last decade, facilitated by the manufacture of noninvasive, high-resolution/speed video-oculography eye trackers. Due to the small magnitude of FEMs, obtaining reliable data can be challenging, however, and depends critically on the sensitivity and precision of the eye tracking system. Yet, no study has conducted an in-depth comparison of human FEM recordings obtained with the search coil (considered the gold standard for measuring microsaccades and drift) and with contemporary, state-of-the art video trackers. Here we measured human microsaccades and drift simultaneously with the search coil and a popular state-of-the-art video tracker. We found that 95% of microsaccades detected with the search coil were also detected with the video tracker, and 95% of microsaccades detected with video tracking were also detected with the search coil, indicating substantial agreement between the two systems. Peak/mean velocities and main sequence slopes of microsaccades detected with video tracking were significantly higher than those of the same microsaccades detected with the search coil, however. Ocular drift was significantly correlated between the two systems, but drift speeds were higher with video tracking than with the search coil. Overall, our combined results suggest that contemporary video tracking now approaches the search coil for measuring FEMs.

Indexed as

Fixation, OcularEye Movement MeasurementsEye MovementsFemaleHumansMaleSaccadesVideo RecordingVision, Ocular

Identifiers

PMID26035820
PMCPMC4452707

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.