Stroboscopy Flashcards
1
Q
Talbot’s Law
A
Images linger on the retina for only 0.2secs. Only 5 distinct images can be viewed per sec. IF MORE THAN 5 IMAGES/SEC ARE PRESENTED, THE VIEWER PERCEIVES THE IMAGES AS CONNECTED (ILLUSION OF SLOW MOTION)
2
Q
What is a stroboscope?
A
An instrument for determining the speed of cyclic motion (as rotation or vibration) that causes the motion to appear slowed or stopped.
3
Q
What are the 3 functional divisions of the vocal cords?
A
Cover: Epithelium and superficial layer of the lamina propria
Transition: Intermediate and deep layers of the lamina propria
Body: Thyroarytenoid muscle
4
Q
What are the stroboscopic parameters?
A
- Closure pattern
- Phase closure
- Amplitude of vibration
- Mucosal wave
- Adynamic segments
- Vertical closure level
- Symmetry
- Regularity
