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Visual Stress of the Open Urban Environment

This study has been withdrawn prior to enrollment.
(Administartive and technical problems)
Tel Aviv University
Information provided by (Responsible Party):
Meir Medical Center Identifier:
First received: December 2, 2009
Last updated: October 12, 2015
Last verified: November 2012

Background and objectives: There is a general agreement that some types of urban environment could be the source of psychological stress as opposed to natural-relaxing environment. A number of aesthetical researches found out that the main cause for stress appearance can be explained by the complexity and order of the environment. There are also some indications that the stressing influence of the open environment can be measured by evaluating eye movements, in particular saccadic movements.

The objective of this study is to characterize eye movements - mainly saccades -while presenting visual material of different complexity and order and to evaluate the possible relationship between eye movements and parameters of psychological and physiological stress.

Methods: The research is based on systematic gradual experiments on healthy volunteers, who will be tested while viewing series of abstract figures and pictures of natural and urban areas with different level of complexity and order. Each figure or picture will be showed to subjects for 7 seconds. During the whole experimental session the investigators will measure:

  1. Saccadic and other eye movements using the magnetic scleral search coil technique. The magnetic scleral search coil technique is the most sensitive and accurate technique used in modern ocular motor research for measuring horizontal, vertical and torsional eye movements. The coils are easy to apply and well tolerated over a wearing period of up to 45 minutes per recording session.
  2. Heart rate pulse will be measured using a commercial pulse-meter.
  3. Aesthetical evaluation: Following each figure or picture 7 seconds presentation; subjects will rate it in a scale from 1 (very relaxing) to 10 (very stressful).

Possible relationship between saccadic eye movements, heart rate and aesthetical rate will be analyzed using WIN 11 SPSS and MATLAB in statistically accepted ways.

Population: A total of about 60 healthy subjects aged 18-60 years old will be recruited for the study from students, faculty and staff of Tel Aviv University and of Meir Medical Center.

Criteria for inclusion: Healthy subject with normal vision

Criteria for exclusion: Eye disease such as corneal or scleral abrasion or disease, glaucoma, refractive errors greater than 2 diopters and concurrent medication with CNS-active agents.

Visual Stress

Study Type: Observational
Study Design: Observational Model: Cohort
Time Perspective: Cross-Sectional
Official Title: Visual Stress of the Open Urban Environment

Further study details as provided by Meir Medical Center:

Enrollment: 0
Study Start Date: April 2011
Estimated Study Completion Date: December 2012
Primary Completion Date: December 2011 (Final data collection date for primary outcome measure)

Ages Eligible for Study:   18 Years to 60 Years   (Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   Yes
Sampling Method:   Non-Probability Sample
Study Population
Healthy subjects aged 18-60 years old will be recruited for the study from students, faculty and staff of Tel Aviv University and of Meir Medical Center

Inclusion Criteria:

  • Healthy subject
  • Normal vision

Exclusion Criteria:

  • Eye disease such as corneal or scleral abrasion or disease, glaucoma
  • Refractive errors greater than 2 diopters
  • Concurrent medication with CNS-active agents
  Contacts and Locations
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Please refer to this study by its identifier: NCT01025310

Department of Neurology
Kfar Saba, Israel, 44281
Sponsors and Collaborators
Meir Medical Center
Tel Aviv University
Principal Investigator: Carlos R Gordon, MD, DSc Department of Neurology, Meir Medical Center, Kfar Saba, Israel
  More Information

Responsible Party: Meir Medical Center Identifier: NCT01025310     History of Changes
Other Study ID Numbers: 107-09
Study First Received: December 2, 2009
Last Updated: October 12, 2015

Keywords provided by Meir Medical Center:
eye movements
search coil
Saccadic eye movements
Urban environment processed this record on April 28, 2017