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How your memories can be twisted under social pressure | KurzweilAI - 0 views

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    Listen up, Facebook and Twitter groupies: how easily can social pressure affect your memory? Very easily, researchers at the Weizmann Institute and University College London have proved, and they think they even know what part of the brain is responsible. The participants conformed to the group on these "planted" responses, giving incorrect answers nearly 70% of the time. Volunteers watched a documentary film in small groups. Three days later, they returned to the lab individually to take a memory test, answering questions about the film. They were also asked how confident they were in their answers. They were later invited back to the lab to retake the test. This time, the subjects were also given supposed answers of the others in their film-viewing group (along with social-media-style photos) while being scanned in a functional MRI (fMRI) that revealed their brain activity. Is most of what you know false? Planted among these were false answers to questions the volunteers had previously answered correctly and confidently. The participants conformed to the group on these "planted" responses, giving incorrect answers nearly 70% of the time. To determine if their memory of the film had actually undergone a change, the researchers invited the subjects back to the lab later to take the memory test once again, telling them that the answers they had previously been fed were not those of their fellow film watchers, but random computer generations. Some of the responses reverted back to the original, correct ones, but get this: despite finding out the scientists messed with their minds, close to half of their responses remained erroneous, implying that the subjects were relying on false memories implanted in the earlier session. An analysis of the fMRI data showed a strong co-activation and connectivity between two brain areas: the hippocampus and the amygdala. Social reinforcement could act on the amygdala to persuade our brains to replace a strong memory wi
Todd Suomela

PLoS ONE: Neural Correlates of Hate - 0 views

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    In this work, we address an important but unexplored topic, namely the neural correlates of hate. In a block-design fMRI study, we scanned 17 normal human subjects while they viewed the face of a person they hated and also faces of acquaintances for whom they had neutral feelings. A hate score was obtained for the object of hate for each subject and this was used as a covariate in a between-subject random effects analysis. Viewing a hated face resulted in increased activity in the medial frontal gyrus, right putamen, bilaterally in premotor cortex, in the frontal pole and bilaterally in the medial insula. We also found three areas where activation correlated linearly with the declared level of hatred, the right insula, right premotor cortex and the right fronto-medial gyrus. One area of deactivation was found in the right superior frontal gyrus. The study thus shows that there is a unique pattern of activity in the brain in the context of hate. Though distinct from the pattern of activity that correlates with romantic love, this pattern nevertheless shares two areas with the latter, namely the putamen and the insula.
Sarah Eeee

*A Brain Scientist's Take on Writing*: What Mirror Images and Foreign Scripts Tell Us A... - 0 views

  • For most adults in literate countries, reading is so well practiced that it’s reflexive. If the words are there, it's impossible not to read.
  • If you raise a child on a desert island, he'll learn to eat, walk, and sleep, but odds are he won't spontaneously pick up a stick and start writing. For most of human history, written language didn't even exist. Reading as a cultural invention has only been around for a few thousand years, a snap of a finger in evolutionary terms.
  • we’re very good at seeing, and the trick is just to retune that machinery to the demands of reading.
  • ...11 more annotations...
  • But even on a basic visual level, we have to somewhat reprogram our visual systems.
  • Mirror invariance, the idea that something flipped sideways is still the same object, is a core property of our visual systems, and for good reason.
  • What's the mirror image of b? Now it's a completely different letter: d.
  • Mirror reversal is overwhelmingly common in beginning writers, from the occasional flipped letter to whole words written as a mirror image. Kids do this spontaneously. They never actually see flipped letters in the world around them. It's as if their brains are too powerful for the task.
  • With practice however, we do retrain our brains to read
  • Does the brain of a reader look different from that of a nonreader?
  • Since blood flow is tied to brain activity, fMRI allows us to see the patches of brain involved in different tasks.
    • Sarah Eeee
       
      Bit of an oversimplification, no?
  • They found that most participants did indeed have a brain region that responded more to words than objects.
  • This is rather remarkable, that the brain would develop a specialized area for an artificial category of images.
  • need more proof that this region developed as a result of learning to read.
  • If reading experience does alter the brain, you would expect English readers and English/Hebrew readers to have different brain responses to Hebrew. And this is indeed what Baker found. The bilingual readers had high activation for both Hebrew and English in their word region, while monolingual English readers only had high activation for English.
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    Interesting & quick post on research into the neurological basis of reading.
Hypnosis Training Academy

Breakthrough Stanford Research: Hypnotic Trance Changes Brain Activity - 0 views

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    A groundbreaking Stanford Study lead by Dr. David Spiegel has revealed what hypnotists have long known about brain activity whilst under a hypnotic trance. That is: some parts of the brain function differently under hypnosis than during normal consciousness. In essence, hypnosis indeed alters brain patterns and activity. These findings might help explain the intense absorption, lack of self-consciousness and suggestibility that characterize the hypnotic state. Would you like to discover more about Dr. David Spiegel hypnosis research findings and how you can use hypnosis to control pain and increase someone's self-esteem? Check out the latest article on HypnosisTrainingAcademy.com now…..
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