What can eye-tracking reveal about cognitive processes?
What can eye-tracking reveal about
cognitive processes?
From
Brain Health
to
Methodology
Three lenses on what
reveal,
eye movements
high-speed technology
and what
makes visible.
From
Brain Health
to
Methodology
Why Sampling
Rate Matters
Rate Matters
Dissecting
Reading Behaviour
Reading Behaviour
Biomarker for
Brain Health
Brain Health
Three lenses on what
reveal,
eye movements
high-speed technology
and what
makes visible.
Saccade Trajectory at 250 Hz
At 250 Hz, a measurement is taken every 4ms.
Saccade onset and offset can be roughly approximated.
Saccade onset and offset can be roughly approximated.
Saccade Trajectory at 815 Hz
At 815 Hz, the gaze is sampled
every 1.2 ms.
The full velocity profile is recovered.
every 1.2 ms.
The full velocity profile is recovered.
Saccade Trajectory at 60 Hz
At 60 Hz, the eye’s position is recorded once every 17ms.
The shape is invisible.
The shape is invisible.
: Why It Matters
Sampling Rate
Saccade Trajectory at 250 Hz
At 250 Hz, a measurement is taken every 4ms.
Saccade onset and offset can be roughly approximated.
Saccade onset and offset can be roughly approximated.
Saccade Trajectory at 815 Hz
At 815 Hz, the gaze is sampled
every 1.2 ms.
The full velocity profile is recovered.
every 1.2 ms.
The full velocity profile is recovered.
Saccade Trajectory at 60 Hz
At 60 Hz, the eye’s position is recorded once every 17ms.
The shape is invisible.
The shape is invisible.
: Why It Matters
Sampling Rate
Saccades are rapid eye movements from 20 to 100 ms, initiated by the brain. Therefore, they contain a wealth of information about neurocognitive processes.
Sampling rate determines
how much of that information
you actually capture.
how much of that information
you actually capture.
Why
Sampling Rate
Matters
Saccades are rapid eye movements from 20 to 100 ms initiated by the brain. Therefore, they contain a wealth of information about neurocognitive processes.
Sampling rate determines how much of that information you actually capture.
Why Sampling Rate Matters
Reading feels like smooth sailing, but eye-tracking reveals the non-linear cognitive chunking driving text comprehension.
To adjust cognitive load to lexical complexity,
the brain modulates eye movements by alternating between prolonged fixations, regressions,
and skipping predictable words.
To adjust cognitive load to lexical complexity,
the brain modulates eye movements by alternating between prolonged fixations, regressions,
and skipping predictable words.
Watch the Case Study
Dissecting
Reading
Behavior
Reading feels like smooth sailing, but eye-tracking reveals the non-linear cognitive chunking driving text comprehension.
To adjust cognitive load to lexical complexity,
the brain modulates eye movements by alternating between prolonged fixations, regressions,
and skipping predictable words.
To adjust cognitive load to lexical complexity,
the brain modulates eye movements by alternating between prolonged fixations, regressions,
and skipping predictable words.
Dissecting Reading Behaviour
The pauses between saccades are called fixations (>200ms), with longer dwell times reflecting
lexical novelty or complexity
lexical novelty or complexity
The pauses between saccades are called fixations (>200ms), with longer dwell times reflecting
lexical novelty or complexity
lexical novelty or complexity
Neurological and psychiatric conditions alter the brain's control over eye movements in measurable, reproducible ways.
This positions eye-tracking as a plausible biomarker for predicting response to emerging treatments, such as neuromodulation and psychedelics.
This positions eye-tracking as a plausible biomarker for predicting response to emerging treatments, such as neuromodulation and psychedelics.
Dr. Owen Muir on predicting
treatment response
treatment response
Plausible
Biomarker
for Brain Health
Neurological and psychiatric conditions alter the brain's control over eye movements in measurable, reproducible ways.
This positions eye-tracking as a plausible biomarker for predicting response to emerging treatments, such as neuromodulation and psychedelics.
This positions eye-tracking as a plausible biomarker for predicting response to emerging treatments, such as neuromodulation and psychedelics.
Plausible Biomarker for Brain Health