10.1371/journal.pone.0050205.g004 Catherine Cukras Catherine Cukras Terry Gaasterland Terry Gaasterland Pauline Lee Pauline Lee Harini V. Gudiseva Harini V. Gudiseva Venkata R. M. Chavali Venkata R. M. Chavali Raghu Pullakhandam Raghu Pullakhandam Bruno Maranhao Bruno Maranhao Lee Edsall Lee Edsall Sandra Soares Sandra Soares G. Bhanuprakash Reddy G. Bhanuprakash Reddy Paul A. Sieving Paul A. Sieving Radha Ayyagari Radha Ayyagari Electroretinogram responses from patient IV-4 with photopic single flash and 30 Hz flicker response stimuli. Public Library of Science 2012 responses iv-4 photopic 30 hz flicker 2012-11-26 02:17:11 Figure https://plos.figshare.com/articles/figure/_Electroretinogram_responses_from_patient_IV_4_with_photopic_single_flash_and_30_Hz_flicker_response_stimuli_/208231 <p>Both panels show responses at younger age 38 years on top and at 55 years on bottom. The single flash cone responses at age 38 was reduced approximately 80% from normal and was no longer detectable 17 years later (Panel A). The cone flicker response was similarly reduced at age 38 and further diminished by age 55 (Panel B).</p>