News tagged with photoreceptor

Evolutionary bestseller in image processing

The eye is not just a lens that takes pictures and converts them into electrical signals. As with all vertebrates, nerve cells in the human eye separate an image into different image channels once it has been ...

Nov 10, 2010
5 / 5 (7) 0 | with audio podcast

Red light regulates nectar secretion

Flowering plants produce nectar to attract insect pollinators. Some plant species, such as Lima bean, also secrete nectar from so-called extrafloral nectaries to attract ants which in turn fend off herbivores. ...

Sep 27, 2010
5 / 5 (1) 1 | with audio podcast