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Science 13 September 1996:
Vol. 273. no. 5281, pp. 1489 - 1490
DOI: 10.1126/science.273.5281.1489
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Marcia Barinaga

Walking a straight line or steering a car down a road may seem effortless, but your brain has to perform a difficult computation to keep you on course. The images of oncoming objects provide a clue to where you are headed, because their images appear to expand from a central point. But that point doesn't stay fixed on your retina, because your eyes are continually moving about. Results reported on page 1544 by a research team help explain how the brain compensates: The researchers have found individual neurons that combine visual information with information about eye movements to calculate the correct heading.




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Science. ISSN 0036-8075 (print), 1095-9203 (online)