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#neuroscience

28 Beiträge26 Beteiligte1 Beitrag heute
Öffentlich
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.
Öffentlich
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?Von Tommy Blanchard
#Dopamine#Addiction#Neuroscience
Antwortete im Thread
Öffentlich
aj

@pdbrooker I'm super interested to see where this takes you. How we construct meaning around multi-sensory experiences, and how our interaction with sound changes when we're experiencing ourselves making sounds, making sounds with others, etc. I think people in the #neuroscience field would have a research question ideas that could excite you for future interdisciplinary research projects on how your tools affect the way brains react to seeing + hearing + feeling + all at the same time. 🧠

Öffentlich
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 revealVon Eric W. Dolan
#Neuroscience#Politics
Öffentlich
Good News Community

Scientists have created the most detailed wiring diagram of the brain ever, thanks to IARPA’s MICrONS program. They mapped over 200,000 cells and 500 million synapses in a mouse’s visual cortex, linking structure and function at an unprecedented scale. This breakthrough could revolutionize our understanding of cognition, consciousness, and brain disorders.

@goodnews

#Neuroscience #BrainMapping #MICrONS #IARPA #Consciousness #GoodNews
thedebrief.org/iarpa-research-

The Debrief · IARPA Research Achieves the Impossible in New Breakthrough Revealing the Brain's Biggest MysteriesScience, Tech and Defense for the Rebelliously Curious.
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