Figure 1
From: Effect of nystagmus on VEP-based objective visual acuity estimates
VEP data from two examples. Visual evoked potential visual acuity (VAVEP) and subjective VA (VEPpsych) are given for two individuals, i.e., a healthy control (HC) and a participant with nystagmus (NY). A) VEP-results underlying the estimation of VAVEP. For each participant, NY (JTE807) and a HC (OEX914), two panels are given. The left panel depicts the raw VEP traces for the different check sizes ranging from 0.046° to 0.370° . The right panel depicts the power spectrum and the respective significance of the response’s amplitude at 7.5 Hz, i.e., the stimulation frequency, which enter the spatial frequency tuning curve. B) Spatial frequency tuning curve and VAVEP estimate for NY and HC. VAVEP is derived from the extrapolated spatial frequency (SF) limit determined from the regression line (strong black line) according to Bach et al.8, as detailed in Methods. Significant responses are denoted with an asterix, non-significant with open symbols. For NY VApsych and VAVEP (0.73 vs 0.36) match less closely than for HC (− 0.09 vs − 0.03).
