Key mechanism in the brain's computation of sound location identified

Animals can locate the source of a sound by detecting microsecond (one millionth of a second) differences in arrival time at their two ears. New York University researchers have identified a mechanism the brain uses to help process sound localisation. This group of scientists found that one reason these neurones are able to perform such a rapid and sensitive computation is because they are extremely responsive to the input's 'rise time' - the time it takes to reach the peak of the synaptic input. The findings will publish next week in the online, open access journal PLoS Biology...

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