For decades, researchers have debated whether Alzheimer’s disease starts independently in vulnerable brain regions at different times, or if it begins in one region and then spreads to neuroanatomically connected areas. A new study strongly supports the latter, demonstrating that abnormal tau protein, a key feature of the neurofibrillary tangles seen in the brains of those with Alzheimer’s, propagates along linked brain circuits, “jumping” from neuron to neuron.

Scientists have found that the capacity of the human brain to process and record information – and not economic constraints – may constitute the dominant limiting factor for the overall growth of globally stored information.

Twitter users choose the microblogs they follow, but that doesn’t mean they always like what they get. Researchers found that users say only a little more than a third of the tweets they receive are worthwhile. Other tweets are either so-so or, in one out of four cases, not worth reading at all.

Scientists have uncovered new insight into a condition in which people are unable to recognize faces.

New findings reveal a novel mechanism through which the brain may become more reluctant to function as we grow older.

Among corporations involved in the 2006 stock-option backdating scandal, those implicated earlier were more likely to dismiss their top executives than those that surfaced later on, according to new research.

Experiments in brain-injured rats show that stem cells injected via the carotid artery travel directly to the brain, where they greatly enhance functional recovery.

Scientists have found that a rare dyslexia-linked genetic variant of the ROBO1 gene decreases normal crossing of auditory pathways in the human brain. The results link, for the first time, a dyslexia-susceptibility gene to a specific sensory function of the human brain.

Scientists have found that a rare dyslexia-linked genetic variant of the ROBO1 gene decreases normal crossing of auditory pathways in the human brain. The results link, for the first time, a dyslexia-susceptibility gene to a specific sensory function of the human brain.

Researchers reveal how pleasantness and emotional intensity affects memories. A woman’s memory of an experience is less likely to be accurate than a man’s if it was unpleasant and emotionally provocative, new research suggests.