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Brain waves guide us in spotlighting surprises -- ScienceDaily

By measuring thousands of neurons along the surface, or cortex, of the brain in animals as they reacted to predictable and surprising images, the researchers observed that low frequency alpha and beta brain waves, or rhythms, originating in the brain's frontal cognitive regions tamped down neural activity associated with predictable stimuli. That paved the way for neurons in sensory regions in the back of the brain to push forward information associated with unexpected stimuli via higher-frequency gamma waves. The backflow of alpha/beta carrying inhibitory predictions typically channeled through deeper layers of the cortex, while the forward flow of excitatory gamma carrying novel stimuli propagated across superficial layers.

Successful research papers cite young references: Analysis of scientific citations reveals previously unknown patterns -- ScienceDaily

While most researchers cite older, well-established papers in their field, highly cited papers -- papers that other published papers cite the most often and therefore are considered successful -- also cite more work that has been published relatively recently. In fact, that cited work goes on to become highly cited itself, showing that top scientists and engineers are adept at betting on good prospects. "You could say the best researchers also have the best scientific taste," said Luís Amaral, Erastus Otis Haven Professor of Chemical and Biological Engineering in Northwestern's McCormick School of Engineering and lead author of the research.

Researchers Find Fear and Courage Switches in Brain - Neuroscience News

Human brains harbor a structure equivalent to the vMT, Huberman said. He speculated that in people with phobias, constant anxiety or PTSD, malfunctioning circuitry or traumatic episodes may prevent vMT signaling from dropping off with repeated exposure to a stress-inducing situation. In other experiments, his group is now exploring the efficacy of techniques, such as deep breathing and relaxation of visual fixation, in adjusting the arousal states of people suffering from these problems. The thinking is that reducing vMT signaling in such individuals, or altering the balance of signaling strength from their human equivalents of the xiphoid nucleus and nucleus reuniens may increase their flexibility in coping with stress.