Optically pumped magnetometers (OPMs) have been adopted for the measurement of brain activity. Without the need to be cooled to cryogenic temperatures, an array of these sensors can be placed more flexibly, which allows for the recording of neuronal structures other than neocortex. Here we use eight OPM sensors to record human retinal activity following flash stimulation. We compare this magnetoretinographic (MRG) activity to the simultaneously recorded electroretinogram of the eight participants. The MRG shows the familiar flash-evoked potentials (a-wave and b-wave) and shares a highly significant amount of information with the electroretinogram (both in a simultaneous and separate measurement). We conclude that OPM sensors have the potential to become a contactless alternative to fiber electrodes for the measurement of retinal activity. Such a contactless solution can benefit both clinical and neuroscientific settings.

光泵磁力计 (OPM) 已被用于测量大脑活动。无需冷却至低温，这些传感器阵列可以更灵活地放置，从而允许记录新皮质以外的神经元结构。在这里，我们使用八个 OPM 传感器来记录闪光刺激后的人类视网膜活动。我们将这种视网膜磁图 (MRG) 活动与同时记录的八名参与者的视网膜电图进行比较。MRG 显示熟悉的闪光诱发电位（a 波和 b 波），并与视网膜电图共享大量信息（同时测量和单独测量）。我们得出结论，OPM 传感器有可能成为用于测量视网膜活动的纤维电极的非接触式替代品。