Publications by authors named "J C Rouland"
We present a method for mapping multifocal Pupillary Response Fields in a short amount of time using a visual stimulus covering 40° of the visual angle divided into nine contiguous sectors simultaneously modulated in luminance at specific, incommensurate, temporal frequencies. We test this multifocal Pupillary Frequency Tagging (mPFT) approach with young healthy participants (N = 36) and show that the spectral power of the sustained pupillary response elicited by 45 s of fixation of this multipartite stimulus reflects the relative contribution of each sector/frequency to the overall pupillary response. We further analyze the phase lag for each temporal frequency as well as several global features related to pupil state.
View Article and Find Full Text PDFObjective: To investigate neurophysiological dynamics during a visuocognitive task in glaucoma patients vs. healthy controls.
Methods: Fifteen patients with early-stage primary open-angle glaucoma (POAG) and fifteen age-matched healthy participants underwent a "go/no-go" task, monitored with EEG.
Article Synopsis
- The study focuses on the imaging features of serious macular issues linked to glaucoma, including macular retinoschisis (MR) and serous retinal detachment (SRD).
- A total of 10 eyes from 8 patients were evaluated using various imaging techniques, revealing MR in all cases and SRD in half, with no improvement seen in vision despite treatment.
- The research emphasizes the importance of advanced imaging methods for diagnosing these complications, as traditional treatments did not resolve the macular issues, although one eye showed positive outcomes after vitrectomy.
Significance: To better understand the implication of a potential cognitive change in glaucoma, patients were stimulated in central visual areas considered functionally normal to discard an effect due to the loss of vision during an attentional task. The outcome might improve the follow-up on the impact of the pathology.
Purpose: This study aimed to evaluate the effect of primary open-angle glaucoma on the visual attention system by recording responses of behavioral and oculomotor strategies.