A flicker stimulus is used when measuring which type of ERG?

Unlock all questions

This demo includes only 20 questions. Upgrade to access hundreds of questions, flashcards, exam simulations, and disable ads.

Full question bankExam simulationsFlashcards
From $24.99Unlock all

Test your knowledge on photoreceptors. Use flashcards and multiple-choice questions, each with hints and explanations. Prepare for your test with confidence!

Multiple Choice

A flicker stimulus is used when measuring which type of ERG?

Explanation:
The idea being tested is that flicker stimuli primarily reveal cone-based, or photopic, function. In ERG testing, cones can follow rapid changes in light (high temporal resolution) and are active under light adaptation, while rods are slow to respond and saturate with brighter lights, so they can’t track fast flicker. A flicker stimulus is designed at a frequency that rods can’t follow, so the resulting ERG waveform mainly reflects cone activity. That’s why flicker ERG is used to assess photopic function.

The idea being tested is that flicker stimuli primarily reveal cone-based, or photopic, function. In ERG testing, cones can follow rapid changes in light (high temporal resolution) and are active under light adaptation, while rods are slow to respond and saturate with brighter lights, so they can’t track fast flicker. A flicker stimulus is designed at a frequency that rods can’t follow, so the resulting ERG waveform mainly reflects cone activity. That’s why flicker ERG is used to assess photopic function.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy