Publications by authors named "Birte S Loffler"
Article Synopsis
- Scientists studied older people to see if a special brain stimulation could help them react faster during a task.
- They used different types of stimulation, including one that makes brain waves at 40 Hz and compared it to a fake one and a slower one.
- The results showed that while everyone got slower over time, the 40 Hz group didn't improve as much as expected, and the brain activity changes were similar for all groups.
Indicators for a decrement in vigilance are a slowdown in reaction times and an increase in alpha power in the electroencephalogram in posterior regions of the brain. Transcranial alternating current stimulation (tACS) is a neuropsychological technique that has been found to interact with intrinsic brain oscillations and is able to enhance cognitive and behavioral performance. Recent studies show that tACS in the gamma frequency range (30-80 Hz) is able to downregulate amplitudes in the alpha frequency range (8-12 Hz), in accordance to the effect referred to as cross-frequency coupling, where intrinsic alpha and gamma waves modulate each other.
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