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Related Experiment Video

Updated: Jun 12, 2026

Simultaneous Eye Tracking and Single-Neuron Recordings in Human Epilepsy Patients

Simultaneous Eye Tracking and Single-Neuron Recordings in Human Epilepsy Patients

Published on: June 17, 2019

EMDR effects on pursuit eye movements.

Zoi Kapoula¹, Qing Yang, Audrey Bonnet

¹Laboratoire IRIS, CNRS, FRE 3154, Service d'Ophtalmologie-ORL-Stomatologie, Hôpital Européen Georges Pompidou, Paris, France. zoi.kapoula@egp.aphp.fr

|May 28, 2010

Summary

Eye Movement Desensitization and Reprocessing (EMDR) improved smooth pursuit eye movements in healthy volunteers. Following EMDR therapy, participants showed fewer saccades and smoother visual tracking, suggesting enhanced attention.

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Area of Science:

Neuroscience
Psychology
Ophthalmology

Background:

Smooth pursuit eye movements (SPEM) are crucial for visual attention and tracking.
Eye Movement Desensitization and Reprocessing (EMDR) is a therapeutic technique often used for distress reduction.
Previous research suggests potential links between emotional distress and oculomotor control.

Purpose of the Study:

To objectively assess the impact of EMDR on the quality of smooth pursuit eye movements.
To investigate changes in saccadic intrusions and pursuit smoothness before and after EMDR sessions.
To explore the relationship between distress reduction and oculomotor performance post-EMDR.

Main Methods:

Seven healthy volunteers underwent a standard laboratory smooth pursuit eye movement task.
EMDR therapy was administered targeting autobiographical worries causing moderate distress.
Eye movements were recorded using an Eyelink II video system before and after the EMDR session.
Subjective Units of Discomfort Scale (SUDS) was used to measure distress levels.

Main Results:

EMDR sessions were completed by 5 out of 7 participants, with significant distress reduction (SUDS near zero).
Following successful EMDR sessions, participants exhibited improved smooth pursuit eye movements.
A decrease in saccade intrusions (catch-up saccades) and an increase in smooth pursuit components were observed post-EMDR.

Conclusions:

EMDR therapy can lead to objective improvements in smooth pursuit eye movements.
Enhanced oculomotor pursuit smoothness may reflect improved visual attention capabilities.
EMDR's potential to reduce distress might positively influence ocular pursuit through mechanisms like cholinergic activation.