Dr Rogers:
This study is related to your question. You can contact Nick Fogt by
e-mail for more information.
Harold Bedell
Optom Vis Sci. 2000 Dec;77(12):670-4.
The effect of experience on the detection of small eye movements.
Fogt N, Baughman BJ, Good G.
The Ohio State University College of Optometry, Columbus 43210, USA.
[log in to unmask]
PURPOSE: The purpose of this study was to
determine whether experience improves detection of small eye movements
similar to those seen in the cover test during
ideal conditions. METHODS: Three groups of examiners with varying
amounts of experience in eye movement detection
tasks were studied. Eight examiners were 1st-year optometry students,
six were 4th-year optometry students, and six
were practicing optometrists. To determine thresholds for eye movement
detection, examiners indicated the horizontal
direction in which the eyes of one of the experimenters moved. The direction
and extent of each eye movement was randomly
selected. The extent of the eye movement was one of eight logarithmic
steps from a maximum that was determined
through an initial session where the approximate sensitivity of the
examiners
was found (generally +/- 1.75 prism diopters).
RESULTS: Detection thresholds were determined by fitting the data with
a cumulative Gaussian function. The mean
horizontal eye movement eye movement necessary to obtain 99% correct
judgments was 2.65 prism diopters for the
1st-year students, 2.47 prism diopters for the 4th-year students, and 2.40
prism diopters for the practicing optometrists.
CONCLUSIONS: The results indicate that during ideal conditions, little or
no training is required for efficient detection
of small eye movements.
> ----------
> From: Rogers
> Reply To: Eye-movement mailing list
> Sent: Thursday, November 20, 2003 08:21 AM
> To: [log in to unmask]
> Subject: det gaz acc.
>
> Dear colleagues
>
> Can anyone point me towards key
> references that examine the accuracy of
> detection another persons gaze. I have a
> few early references (e.g. Gibson & Pick).
>
> Thanks
>
> Best regards
>
> Steve
>
> Dr. Steven Rogers
> Centre for Ecological Psychology
> Department of Psychology
> University of Portsmouth
> King Henry Building
> Portsmouth
> PO1 2DY
> Tel: (023) 9284 5128
> email: [log in to unmask]
>
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