Asked by Shimi Kleinfeld on Sep 24, 2024
Verified
In the Barany test, what is the expected response of the eyes to rotation in a chair when the head is tilted 90 degrees onto the shoulder?
A) Side to side nystagmus
B) Up and down nystagmus
C) Random eye movements
D) Rotary nystagmus
E) No eye movement
Barany Test
A clinical test used to evaluate the function of the vestibular apparatus in the inner ear, specifically to detect issues with balance and spatial orientation.
Nystagmus
Nystagmus is a condition characterized by involuntary, rapid eye movements which can result in reduced or limited vision.
Rotation
The act or process of an object turning around an internal axis or center point.
- Grasp the physiological basis behind tests for equilibrium and the expected responses.
Verified Answer
AD
Archie Davis5 days ago
Final Answer :
B
Explanation :
When the head is tilted 90 degrees onto the shoulder during rotation in a chair, the expected response of the eyes is up and down nystagmus. This is because tilting the head changes the orientation of the semicircular canals in relation to gravity, specifically affecting the vertical canals, leading to vertical (up and down) eye movements.
Learning Objectives
- Grasp the physiological basis behind tests for equilibrium and the expected responses.