Laboratory #3: Oculomotor Muscle Control

These flashcards cover key terms and definitions related to the oculomotor muscles and functions explored in the laboratory.

Medial Rectus Muscle

Muscle that turns the eye inward toward the nose (adduction).

Lateral Rectus Muscle

Muscle that turns the eye outward away from the nose (abduction).

Saccades

Quick eye movements that reposition the fovea to ensure the image of interest falls on the fovea centralis.

Pursuit

Eye movement that helps keep the fovea pointed at a moving target.

Vestibular Ocular Reflex (VOR)

Reflex that stabilizes the image on the retina when the head moves by producing eye movements in the opposite direction.

Vergence

Eye movement that allows both eyes to converge on a near object or diverge on a distant object.

Optokinetic Reflex

Response that stabilizes vision by tracking a large moving object, complementing VOR.

Electrooculogram (EOG)

Recording of the electrical activity associated with eye movements.

Neural Integrator

Network of neurons that combines eye velocity commands to determine eye position.

Tonic Response

Continuous low-level activity that helps maintain eye position.

Phasic Response

Rapid response that tracks changes in eye movement velocity.

Fovea Centralis

The central region of the retina responsible for sharp central vision.

Convergence

The inward movement of both eyes toward each other when focusing on a near object.

Divergence

The outward movement of both eyes when focusing on a distant object.

EOG Pattern

The characteristic waveform recorded of electrical potentials during different types of eye movements.