Neuroscience

'What was that?' How brains convert sounds to actions

You hear a phone ring or a dog bark. Is it yours or someone else's? You hear footsteps in the night—is it your child, or an intruder? Friend or foe? The decision you make will determine what action you take next. Researchers ...

Neuroscience

Vibrating glove helps stroke patients recover from muscle spasms

After a stroke, survivors often experience uncontrollable spasms that can twist their arms and hands into perpetual fists. The only treatments are expensive, frequently painful injections of botulinum toxin or oral medications ...

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Frequency

Frequency is the number of occurrences of a repeating event per unit time. It is also referred to as temporal frequency. The period is the duration of one cycle in a repeating event, so the period is the reciprocal of the frequency. For example, if a newborn baby's heart beats at a frequency of 120 times a minute, its period (the interval between beats) is half a second.

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