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Category: brain imaging

LSD produces new type of harmonic order in the brain

LSD produces new type of harmonic order in the brain

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See this study. The blurb: “New brain published in the journal Scientific Reports sheds new light on how LSD produces its psychedelic effects. The drug resulted in the ’emergence of new type of order in the brain,’ the researchers found. The study used a new mathematical method to analyze brain activity, known as connectome-harmonic decomposition, to examine how LSD caused alterations in consciousness. A connectome is a distinctive pattern of neural connections — like a wiring diagram of the brain.”

Neural responses to media a strong predictor of friendship

Neural responses to media a strong predictor of friendship

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“The findings revealed that neural response similarity was strongest among friends, and this pattern appeared to manifest across brain regions involved in emotional responding, directing one’s attention and high-level reasoning. Even when the researchers controlled for variables, including left-handed- or right-handedness, age, gender, ethnicity, and nationality, the similarity in neural activity among friends was still evident. The team also found that fMRI response similarities could be used to predict not only if a pair were friends but also the social distance between…

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Neuroscience of Empathy

Neuroscience of Empathy

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(This is copied from the Meetup site. Thanks again to Brent for hosting.) Details Empathy is the ability to put yourself in another person’s shoes and understand how they feel- to be them, even for a second. It’s the link between self and others: how we connect, heal, and relate. Considering its importance in every aspect of our lives, we are taking a deeper look at the neuroscience behind empathy. Recommended Preparation Info. The Neuroscience of Empathy | Article |…

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Downward mental causation and free will

Downward mental causation and free will

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I know, to free will or not to free will, that is the hackneyed question debated in philosophical circles since we learned how to talk. But here’s a cognitive neuroscientist’s research on “how neuronal code underlies top-down mental causation.” It’s a long video, over 2 hours, and I have yet to complete it. Here is Peter Tse’s CV.  Here is his book on the topic is. Here is a good summary of Tse’s work on the topic.

Brain’s facial-recognition mechanism revealed

Brain’s facial-recognition mechanism revealed

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Caltech researchers have identified the brain mechanisms that enable primates to quickly identify specific faces. In a feat of efficiency, surprisingly few feature-recognition neurons are involved in a process that may be able to distinguish among billions of faces. Each neuron in the facial-recognition system specializes in noticing one feature, such as the width of the part in the observed person’s hair. If the person is bald or has no part, the part-width-recognizing neuron remains silent. A small number of…

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Mathematical field of topology reveals importance of ‘holes in brain’

Mathematical field of topology reveals importance of ‘holes in brain’

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New Scientist article: Applying the mathematical field of topology to brain science suggests gaps in densely connected brain regions serve essential cognitive functions. Newly discovered densely connected neural groups are characterized by a gap in the center, with one edge of the ring (cycle) being very thin. It’s speculated that this architecture evolved to enable the brain to better time and sequence the integration of information from different functional areas into a coherent pattern. Aspects of the findings appear to…

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Mass and activity of brain structures correlate with political perspectives

Mass and activity of brain structures correlate with political perspectives

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Brain imaging research indicates some aspects of individual political orientation correlate significantly with the mass and activity of particular brain structures including the right amygdala and the insula. This correlation may derive in part from genetics, but is also influenced by environment and behavior. “there’s a critical nuance here. Schreiber thinks the current research suggests not only that having a particular brain influences your political views, but also that having a particular political view influences and changes your brain. The…

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