The luminance-response function of the photopic negative response (PhNR): analysing different stimulation, recording and measurement approaches

Key Points

• To analyze different stimulation, recording, and measurement approaches of the photopic negative response (PhNR).
• Varying temporal frequency of stimulation up to 4 Hz
• Comparing skin electrode recordings to corneal fibre electrodes
• Measuring PhNR amplitude relative to b-wave and baseline
• Significant increase in temporal frequency without compromising PhNR
• Lower variance in PhNR with skin electrode recordings
• Higher amplitude measurements observed with b-wave compared to corneal electrodes