growlix | 4 years ago | on: Man can change his pupil size on command
growlix's comments
growlix | 5 years ago | on: Behavioral nudges reduce failure to appear for court
growlix | 5 years ago
When it comes to data, the 2016 National Household Education Survey by the National Center for Education Statistics shows that 51% of parents selected "A desire to provide religious instruction" as an "important" reason for homeschooling their children, and 67% selected "A desire to provide moral instruction" as an "important" reason for homeschooling [0, in bar plot form; 1, original data].
[0] https://responsiblehomeschooling.org/research/summaries/reas... [1] https://nces.ed.gov/pubs2017/2017102.pdf
growlix | 5 years ago
[0] https://www.globalresearch.ca/the-real-reason-america-used-n...
growlix | 5 years ago
growlix | 5 years ago | on: Unidentified Federal Law Enforcement Detaining Protestors Without Explanation
growlix | 7 years ago | on: Complex societies precede moralizing gods throughout world history
growlix | 7 years ago | on: Complex societies precede moralizing gods throughout world history
growlix | 7 years ago
I assume their clickbait subsidizes their investigative journalism, a business model that gives me hope given the importance of investigative journalism. Unfortunately that hope is tempered by the recent round of layoffs.
[0] https://www.buzzfeednews.com/investigations [1] https://www.pulitzer.org/finalists/staff-buzzfeed-news
growlix | 7 years ago
growlix | 7 years ago
But I'm a little confused why you made this comment on an earlier HN post about Shannon Labs: https://news.ycombinator.com/item?id=17675617
growlix | 7 years ago | on: 'Murdered' Journalist Is Alive and Well
It's not clear why they faked his death, but apparently it led to something happening.
[0] https://www.theguardian.com/world/2018/may/30/russian-journa...
growlix | 7 years ago | on: Memory transfer between snails challenges view of how brain remembers
growlix | 7 years ago | on: Brain cells that track location in space appear to also count beats in time
Coordination of movement in space (for example something like grasping an object) is more dependent on parietal cortex & the dorsal visual stream (the so-called "where" pathway), and the cerebellum.
"Visuospatial skill", as typified by tasks like mental object rotation, is more ascribable to temporal cortex & the ventral visual stream (the so-called "what" pathway, responsible for object recognition). However, it often requires both ventral and dorsal visual cortex.
Navigation is hippocampus-dependent. However, the hippocampus is not a "GPS". I cannot emphasize this strongly enough. It is a hub for integrating and associating disparate information from across the brain in order to form representations of and the relationships between behaviorally-relevant states. This explains why the hippocampus is also involved in "navigating" abstract state spaces, for example turn-based game states [0] or auditory frequency [1], when they're behaviorally relevant. It gets analogized as a GPS because 1) most of the research involves spatial tasks, so space is the behaviorally-relevant dimension, 2) a certain Nobel Prize winner does not feel the need to update his theory, and 3) "Hippocampus = GPS" is too sexy and intuitive of an analogy, especially for the lay press.
The idea of the hippocampus as an "associative engine" also helps unify its seemingly disparate roles in "navigation" and memory when you consider that a memory is just information from disparate brain areas that's been associated via temporal correlation because of its behavioral relevance. It also explains why researchers observe "place cells" and "time cells" and "head direction cels" and "eye position cells": because these variables are behaviorally relevant (i.e. important for maximizing reward) in the task the animal is performing.
[0] https://onlinelibrary.wiley.com/doi/pdf/10.1002/hipo.22523
growlix | 7 years ago | on: Chinese businesses and the military using “emotional surveillance technology”
growlix | 8 years ago | on: Hard to Believe: Film Explores Chinese Regime’s Killing of Prisoners for Organs
And the quantity, youth, and low latency of organs for transplant exclude every possibility except harvesting.
growlix | 8 years ago | on: Hard to Believe: Film Explores Chinese Regime’s Killing of Prisoners for Organs
The Falun Gong desires to exist.
growlix | 8 years ago | on: Theranos Misled Investors and Consumers Who Used Its Blood Test
This Vanity Fair piece provides a fair amount of character background: https://www.vanityfair.com/news/2016/09/elizabeth-holmes-the...
growlix | 8 years ago
source: https://www.nature.com/articles/nature11400
abstract: Antibiotics administered in low doses have been widely used as growth promoters in the agricultural industry since the 1950s, yet the mechanisms for this effect are unclear. Because antimicrobial agents of different classes and varying activity are effective across several vertebrate species, we proposed that such subtherapeutic administration alters the population structure of the gut microbiome as well as its metabolic capabilities. We generated a model of adiposity by giving subtherapeutic antibiotic therapy to young mice and evaluated changes in the composition and capabilities of the gut microbiome. Administration of subtherapeutic antibiotic therapy increased adiposity in young mice and increased hormone levels related to metabolism. We observed substantial taxonomic changes in the microbiome, changes in copies of key genes involved in the metabolism of carbohydrates to short-chain fatty acids, increases in colonic short-chain fatty acid levels, and alterations in the regulation of hepatic metabolism of lipids and cholesterol. In this model, we demonstrate the alteration of early-life murine metabolic homeostasis through antibiotic manipulation.
growlix | 8 years ago
"...various indirect mechanisms possibly mediating this phenomenon were tested: accommodation, brightness, increases in arousal by increased mental effort. None of these behavioral tests could support an indirect strategy as the mode of action"