Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/142916
Title: Target displacements during eye blinks trigger automatic recalibration of gaze direction
Authors: Maus, Gerrit W.
Duyck, Marianne
Lisi, Matteo
Collins, Thérèse
Whitney, David
Cavanagh, Patrick
Keywords: Social sciences::Psychology
Issue Date: 2017
Source: Maus, G. W., Duyck, M., Lisi, M., Collins, T., Whitney, D., & Cavanagh, P. (2017). Target displacements during eye blinks trigger automatic recalibration of gaze direction. Current Biology, 27(3), 445-450. doi:10.1016/j.cub.2016.12.029
Journal: Current Biology
Abstract: Eye blinks cause disruptions to visual input and are accompanied by rotations of the eyeball [1]. Like every motor action, these eye movements are subject to noise and introduce instabilities in gaze direction across blinks [2]. Accumulating errors across repeated blinks would be debilitating for visual performance. Here, we show that the oculomotor system constantly recalibrates gaze direction during blinks to counteract gaze instability. Observers were instructed to fixate a visual target while gaze direction was recorded and blinks were detected in real time. With every spontaneous blink-while eyelids were closed-the target was displaced laterally by 0.5° (or 1.0°). Most observers reported being unaware of displacements during blinks. After adapting for ∼35 blinks, gaze positions after blinks showed significant biases toward the new target position. Automatic eye movements accompanied each blink, and an aftereffect persisted for a few blinks after target displacements were eliminated. No adaptive gaze shift occurred when blinks were simulated with shutter glasses at random time points or actively triggered by observers, or when target displacements were masked by a distracting stimulus. Visual signals during blinks are suppressed by inhibitory mechanisms [3-6], so that small changes across blinks are generally not noticed [7, 8]. Additionally, target displacements during blinks can trigger automatic gaze recalibration, similar to the well-known saccadic adaptation effect [9-11]. This novel mechanism might be specific to the maintenance of gaze direction across blinks or might depend on a more general oculomotor recalibration mechanism adapting gaze position during intrinsically generated disruptions to visual input.
URI: https://hdl.handle.net/10356/142916
ISSN: 0960-9822
DOI: 10.1016/j.cub.2016.12.029
Rights: © 2016 Elsevier Ltd. All rights reserved. This paper was published in Current Biology and is made available with permission of Elsevier Ltd.
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:SSS Journal Articles

Files in This Item:
File Description SizeFormat 
NIHMS837600-supplement-Suppl.pdfsupplemental776.01 kBAdobe PDFThumbnail
View/Open
Target displacements during eye blinks trigger automatic recalibration of gaze direction.pdf1.16 MBAdobe PDFThumbnail
View/Open

SCOPUSTM   
Citations 20

9
Updated on Mar 10, 2021

PublonsTM
Citations 20

9
Updated on Mar 8, 2021

Page view(s)

99
Updated on May 25, 2022

Download(s) 50

19
Updated on May 25, 2022

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.