51�Թ�

Through electroretinogram analyses, the research team was able to show that rod photoreceptors and bipolar cells in the knockout mice exhibit functional deficits in visual processing.

"Using in vivo electroretinogram recordings, we show that there is a decrease in retinal sensitivity to light in marine invertebrates when exposed to reduced oxygen availability," the study's abstract reads.

Doctors also performed an electroretinogram, which measures activity in the retina.

He said they use the insect equivalent of a lie detector, an electroretinogram.

Using a pattern electroretinogram, an electrocardiogram for the eyes, researchers compared the visual electrical activity of 40 healthy people with 40 people who had received diagnoses of major depressive disorder.