Profile

Cover photo
Yohan John
Works at Boston University
Attended Boston University
1,984 followers|345,984 views
AboutPosts

Stream

Yohan John

Shared publicly  - 
 
" By this strange route, physics became revolutionized through the analogy with statistical laws of society."

Read this article if you're curious about the quote above, or any of the following: "rationality", cognitive fallacies/illusions, the history/philosophy of probability, and the unexpectedly close relationship between psychology and probability.

<<In the first part, drawing on recent work in the history of probability, I will show that the distinction between single-event probabilities and frequencies was dependent on theories of mind: the meaning of probability changed when theories of mind changed. In the second part, drawing on recent experimental work, I will show that apparently stable cognitive illusions are dependent on the distinction between single-event probabilities and frequencies: cognitive illusions disappear when single-event probabilities are changed into frequencies. Thus, I argue that the distinction between single-event probabilities and frequencies is not just the province of philosophers and mathematicians, but of direct relevance for psychology, and vice versa.>>

Why the distinction between single-event probabilities and frequencies is important for psychology (and vice versa)
https://www.mpib-berlin.mpg.de/volltexte/institut/dok/full/gg/ggwtdsp__/ggwtdsp__.html

#science   #psychology   #probability #statistics #stats #Bayesian #frequentist   #math #mathematics #cogsci  
1
1
Aman Eid's profile photoYohan John's profile photohaidar jaseem's profile photoVadim Nasardinov's profile photo
3 comments
 
hi
Add a comment...

Yohan John

Shared publicly  - 
 
Interesting!
<<
"To the best of our knowledge, this is the first paper that shows rapid alterations in gene expression within subjects associated with mindfulness meditation practice," says study author Richard J. Davidson, founder of the Center for Investigating Healthy Minds and the William James and Vilas Professor of Psychology and Psychiatry at the University of Wisconsin-Madison.

"Most interestingly, the changes were observed in genes that are the current targets of anti-inflammatory and analgesic drugs," says Perla Kaliman, first author of the article and a researcher at the Institute of Biomedical Research of Barcelona, Spain (IIBB-CSIC-IDIBAPS), where the molecular analyses were conducted.
>>
http://www.science20.com/news_articles/meditation_changes_gene_expression_say_psychologists-125875

#neuroscience   #science  #genetics #epigenetics #mindfulness #meditation #stress
1
Add a comment...

Yohan John

Shared publicly  - 
 
A very interesting discussion on the importance of choice of color map in data visualizations. The wrong color choice can give misleading impressions about the data.

http://www.research.ibm.com/people/l/lloydt/color/color.HTM?utm_medium=referral&amp;utm_source=pulsenews

#science #engineering #data #bigdata #infographics #visualization 
1
Add a comment...

Yohan John

Shared publicly  - 
 
"There is an old New Yorker cartoon of a wine factory in California. The director says to some visitors to the factory, “We used to employ humans to press wine, but now we use up-to-date methods. ” In the background, you see a huge mechanical foot going up and down. To my mind that’s the present state of the art in AI"

Gian-Carlo Rota, in an interview from 1985.

:)

http://goo.gl/LsBSl5


##artificialintelligence #neuroscience #ai  
1
Add a comment...

Yohan John

Shared publicly  - 
 
How long before people start marketing candles that smell like your worst fears?

*Sleep aromatherapy curbs conditioned fear*
http://www.nature.com/neuro/journal/v16/n11/full/nn.3556.html

#neuroscience   #emotion   #science  
1
Add a comment...

Yohan John

Shared publicly  - 
 
The view from nowhere is also a view from no-when.

#physics #science #time
3
Vadim Nasardinov's profile photo
 
I knew that "elsewhen" was a real word but didn't realize that nowhen was as well:

en.wiktionary.org/wiki/elsewhen
en.wiktionary.org/wiki/nowhen
Add a comment...

Yohan John

Shared publicly  - 
 
(Neural) turtles all the way down: 

http://www.eurekalert.org/pub_releases/2013-10/uonc-und102513.php

<<
Axons are where neurons conventionally generate electrical spikes, but many of the same molecules that support axonal spikes are also present in the dendrites. Previous research using dissected brain tissue had demonstrated that dendrites can use those molecules to generate electrical spikes themselves, but it was unclear whether normal brain activity involved those dendritic spikes. For example, could dendritic spikes be involved in how we see?

The answer, Smith's team found, is yes. Dendrites effectively act as mini-neural computers, actively processing neuronal input signals themselves.
>>

#neuroscience #science
1
Add a comment...
Have him in circles
1,984 people
Jeremy McMillan's profile photo
Mücahit ÖZTÜRK's profile photo
Catherine Rose's profile photo
Andrew Comensoli's profile photo
Luis Zapien's profile photo
Martijn Roelandse's profile photo
Renata Davidson's profile photo
Simon Rapilly's profile photo
Brent Presley's profile photo

Yohan John

Shared publicly  - 
 
The question: What are the chances that we will discover how to upload our minds onto computers?

My answer: Zero (or NaN). 
http://neurologism.com/2013/12/11/will-we-ever-be-able-to-upload-our-minds-to-a-computer/

My apologies to any techno-utopians or sci-fi devotees who feel offended.  ;)

There's also an addendum on probability theory, because the notion of "chance" here is deeply problematic.

#science   #neuroscience   #philosophy   #technoutopianism   #scifi   #SF #mind #philosophy #technology   #future   #futuretech   #consciousness  
2
Add a comment...

Yohan John

Shared publicly  - 
 
Interesting article that touches on how the ideology of individualism blinded many biologists to symbiosis.

<<
Apparently constrained by his culture’s prevailing individualist perspective, Geddes never fully articulated a theory of symbiotic-driven speciation, nor did any other Western European or American scientists for another two generations.

If an evolutionary theory featuring symbiotic-driven speciation was to emerge, then it would likely do so outside Western Europe and North America. In fact, by 1910 Russian biologists had raced ahead with the idea of symbiotic-driven speciation. In that year enough relevant evidence had accumulated in the Russian scientific community for the botanist Constantin Merezhkowsky to create a new evolutionary term: symbiogenesis. He declared that the term aptly described “the origin of organisms by the combination or by the association of two or several beings which enter into symbiosis.”
>>

http://www.americanscientist.org/issues/pub/2013/6/evolutions-other-narrative

#science #evolution #biology #competition #cooperation #symbiosis  
1
Add a comment...

Yohan John

Shared publicly  - 
 
<<
When it comes to evolution, there is no such thing as perfection. Even in the simple, unchanging environment of a laboratory flask, bacteria never stop making small tweaks to improve their fitness.

That's the conclusion of the longest-running evolutionary experiment carried out in a lab.

[...]

That undermines one of the favourite metaphors of evolutionary biology, which sees species evolving towards peaks of fitness in a landscape of possibilities. In the real world, species live in ever-changing environments. "What this result says is that there are even more ways of adapting to environments than we imagined," says John Thompson, an evolutionary biologist at the University of California at Santa Cruz.
>>

http://zite.to/1bAjRfa

#biology #evolution #science

3
1
Noel Yap's profile photo
Add a comment...
People
Have him in circles
1,984 people
Jeremy McMillan's profile photo
Mücahit ÖZTÜRK's profile photo
Catherine Rose's profile photo
Andrew Comensoli's profile photo
Luis Zapien's profile photo
Martijn Roelandse's profile photo
Renata Davidson's profile photo
Simon Rapilly's profile photo
Brent Presley's profile photo
Education
  • Boston University
    PhD in Computational Neuroscience, 2006 - 2011
Work
Occupation
Neuroscience postdoc
Employment
  • Boston University
    Postdoc, 2011 - present
Basic Information
Gender
Male