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Percy smiles back weakly, resigned to the wait.

Around one billion of a certain group of particles called weakly interacting massive particles — or WIMPS, for short — are expected to pass through this detector per second.

In the brains of participants with psychosis, researchers found that sensory regions in the cortex were more weakly connected to each other and more strongly connected to the thalamus, the brain's information relay station.

Presumably it consists of some new type of particle, and for decades physicists have hunted in vain for the prime suspect, weakly interacting massive particles.

Surprisingly, this phenomenon was only weakly tied to changes in brain activity.