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Primate Mount Installation
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2005-2010 SR Research Ltd.
6.
Primate Mount Installation
The EyeLink 1000 Primate Mount is a metal bracket that contains an illuminator for use with
the EyeLink 1000 camera. The camera is affixed to the top of the mount pointing downwards
and the researcher supplies an apparatus that will reflect a view of the eyes up into the camera
barrel while reflecting the infrared illumination onto the face of the subject being tracked (see
Figure 6-1). Typically this would involve the researcher fixing a ‘hot mirror’ (a piece of glass
that reflects infrared light while allowing other wavelengths to pass through it) in front of the
subject’s eyes. The subject can thereby see visual stimuli being shown by looking through the
hot mirror, while the camera has a good view of the eyes. Typically the distance between the
camera and where the eye would be for monocular recording would be identical to the Tower
mount – 380 mm.
While the Primate Mount uses a similar set of metrics to the Tower Mount, it is intended to be
flexible and ready to install in a wide range of situations where a means of head stabilization
exists but the Tower or Desktop mounts are inappropriate. This frequently occurs when
research on eye movements is being performed on primates with their head fixed, for instance
by means of a Primate Chair. If the head is fixed extremely solidly, pupil only tracking may be
possible. Otherwise, as with the other EyeLink 1000 mounting options, Pupil-CR mode is
recommended.
Figure 6-1: Typical EyeLink 1000 Primate Mount Installation
