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#neuroscience

56 posts47 participants0 posts today
Public
Earl K. Miller

New results!
Evidence for an active handoff between cerebral hemispheres during target tracking
biorxiv.org/content/10.1101/20
#neuroscience

bioRxiv · Evidence for an active handoff between cerebral hemispheres during target trackingThe brain has somewhat separate cognitive resources for the left and right sides of our visual field. Despite this lateralization, we have a smooth and unified perception of our environment. This raises the question of how the cerebral hemispheres are coordinated to transfer information between them. We recorded neural activity in the lateral prefrontal cortex, bilaterally, as non-human primates covertly tracked a target that moved from one visual hemifield (i.e., from one hemisphere) to the other. Beta (15 to 30 Hz) power, gamma (30 to 80 Hz) power, and spiking information reflected sensory processing of the target. By contrast, alpha (10 to15 Hz) power, theta (4 to10 Hz) power, and spiking information seemed to reflect an active handoff of attention as target information was transferred between hemispheres. Specifically, alpha power and spiking information ramped up in anticipation of the hemifield cross. Theta power peaked after the cross, signaling its completion. Our results support an active hand-off of information between hemispheres. This handshaking operation may be critical for minimizing information loss, much like how mobile towers handshake when transferring calls between them. ### Competing Interest Statement The authors have declared no competing interest.
Public
Dean Burnett (that brains guy)

What did dopamine do to deserve this?

cognitivewonderland.substack.c

A guest post I did for tommy Blanchard's Cognitive Wonderland blog, about the surreal vilification of a vital neurotransmitter, and how this is having negative consequences for us all.

Cognitive Wonderland · What did dopamine do to deserve this?By Tommy Blanchard
#Dopamine#Addiction#Neuroscience
Public
Fjord In Progress

Narcissism shows differently in masculine and feminine presenting people. Here’s how to spot it. It’s treatable if either caught early or if the individual is open to the needed therapies for changes in emotional regulation.

apple.news/ALeShv3hCR4-sgJ2vqu

apple.newsNarcissism shows differently in men and women. Here’s how to spot it — BBC Science Focus MagazineNot every narcissist is a Patrick Bateman waiting in the wings April 19, 2025 When we think of narcissism, many of us jump to the stereotype: arrogant, boastful, probably male – someone who talks too much in meetings and posts too many gym selfies. But narcissism, like most aspects of human psychology, is more complex than that. While men do tend to score higher on certain narcissistic traits, women are just as susceptible – it’s just that narcissism looks different on them. And that’s precisely
#news#medicine#science
Public
petersuber

New study: "Authoritarian attitudes on both the political left and right are linked to specific structural differences in the brain. Young adults who scored higher on right-wing authoritarianism had less gray matter volume in the dorsomedial prefrontal cortex, a region involved in social reasoning. Meanwhile, those who endorsed more extreme forms of left-wing authoritarianism showed reduced cortical thickness in the right anterior insula, a brain area tied to empathy and emotion regulation."
psypost.org/authoritarian-atti

* Primary source
ibroneuroscience.org/article/S

PsyPost · Authoritarian attitudes linked to altered brain anatomy, neuroscientists revealBy Eric W. Dolan
#Neuroscience#Politics
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