If an ERG has a c-wave, is it scotopic or photopic?

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

If an ERG has a c-wave, is it scotopic or photopic?

Explanation:
The c-wave comes from the retinal pigment epithelium’s response to photoreceptor activity, and it is most prominent when rods are driving the signal. In dark-adapted (scotopic) conditions, rods dominate the ERG response, amplifying the c-wave. In photopic testing, where cones take the lead, the c-wave is much smaller or not present. So, seeing a c-wave indicates scotopic (rod-driven) activity rather than photopic (cone-driven) activity.

The c-wave comes from the retinal pigment epithelium’s response to photoreceptor activity, and it is most prominent when rods are driving the signal. In dark-adapted (scotopic) conditions, rods dominate the ERG response, amplifying the c-wave. In photopic testing, where cones take the lead, the c-wave is much smaller or not present. So, seeing a c-wave indicates scotopic (rod-driven) activity rather than photopic (cone-driven) activity.

More Multiple Choice Questions
Subscribe

Get the latest from Examzify

You can unsubscribe at any time. Read our privacy policy