Word: fmri
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...more potent effects: its ability to dull pain. Whipple showed that gentle pressure on the G spot raised pain thresholds by 40% and that during orgasm women could tolerate up to 110% more pain. But she could not explain the link until the advent of functional magnetic resonance imaging (fMRI). Using fMRI to view the brains of easily orgasmic women as they climaxed, either with visual stimuli or by self-stimulation, Whipple found that the body's pain-killing center in the midbrain is activated during peak arousal. Signals from this part of the brain instruct the body to release...
...would collect data on brain activity while love-smitten subjects performed two separate tasks: looking at a photograph of his or her beloved and looking at a "neutral" photograph of an acquaintance who generated no positive or negative romantic feelings. Meanwhile, I would use a functional magnetic resonance imaging (fMRI) machine to take pictures of the subject's brain. The fMRI machine records blood flow in the brain. It is based in part on a simple principle: brain cells that are active use more blood than quiescent brain parts in order to collect the oxygen they need to do their...
...pulled the string, and Newberg released the dye into the subjects' arms. His results showed that the brain doesn't shut off when it meditates but rather blocks information from coming into the parietal lobe. Meanwhile, Benson took a group of highly focused Sikhs who could meditate while an fMRI machine clanked away, and he measured the blood flow in their brains. Overall blood flow was down, but in certain areas, including the limbic system (which generates emotions and memories and regulates heart rate, respiratory rate and metabolism...
...Using fMRI, scientists have determined that beginning readers rely most heavily on the phoneme producer and the word analyzer. The first of these helps a person say things--silently or out loud--and does some analysis of the phonemes found in words. The second analyzes words more thoroughly, pulling them apart into their constituent syllables and phonemes and linking the letters to their sounds...
...situation is different for children with dyslexia. Brain scans suggest that a glitch in their brain prevents them from easily gaining access to the word analyzer and the automatic detector. In the past year, several fMRI studies have shown that dyslexics tend to compensate for the problem by overactivating the phoneme producer...