Related Experiment Video
Updated: Aug 6, 2026

Using Saccadometry with Deep Brain Stimulation to Study Normal and Pathological Brain Function
Published on: July 14, 2016
Physiological correlates of a simple saccadic-decision task to extended objects in superior colliculus
B Caziot1,2,3, B Cooper1, M R Harwood4
1Graduate Center for Vision Research, Department of Biological and Vision Sciences, SUNY College of Optometry, 33 West 42 Street, New York, NY, 10036, USA.
Accurate saccadic eye movements are vital for vision. This study reveals how target size influences saccade initiation latency by examining neuronal activity in the superior colliculus (SC).
Area of Science:
- Neuroscience
- Ophthalmology
- Cognitive Science
Background:
- Saccadic eye movements are essential for visuo-motor tasks, with over 180,000 daily occurrences.
- Real-world vision involves extended objects, yet saccades are often studied with point stimuli.
- The size-latency effect demonstrates that saccade initiation depends on target size, possibly balancing cost and information gain.
Conclusions:
- Provides insights into the neural mechanisms causing delays in the saccadic system.
- Highlights the role of superior colliculus (SC) neuronal activity in modulating saccade initiation based on target size.
- Advances understanding of how the brain processes visual information for efficient eye movements.
More Related Videos
06:46Investigating the Deployment of Visual Attention Before Accurate and Averaging Saccades via Eye Tracking and Assessment of Visual Sensitivity
Published on: March 18, 2019
09:27An Emerging Target Paradigm to Evoke Fast Visuomotor Responses on Human Upper Limb Muscles
Published on: August 25, 2020
Related Concept Videos
The Vestibular System
Motor and Sensory Areas of the Cortex
Motor Areas
The motor areas located in the frontal lobe are central to controlling voluntary movements. This region is further subdivided into the primary motor cortex and the premotor cortex.
Sensory Perception: Organization of the Somatosensory System
The receptor level:
The receptor level is the first stage of sensation. It involves the detection of a stimulus by specialized sensory receptors. The stimulus must arrive within the receptor's receptive field. Next, the receptor converts the energy of the stimulus...
Major Somatic Sensory Pathways
Lobes of the Cerebrum
Frontal lobe
The frontal lobes, located behind the forehead, are the command center of our brain, controlling personality, intelligence, and voluntary muscle movements.
Somatosensory, Motor, and Association Cortex