Post List

  • May 7, 2010
  • 01:55 PM

Different types of synaesthetic experiences involve different brain mechanisms

by Mo in Neurophilosophy

SUBJECTIVE experience poses a major problem for neuroscientists and philosphers alike, and the relationship between them and brain function is particularly puzzling. How can I know that my perception of the colour red is the same as yours, when my experience of the colour occupies a private mental world to which nobody else has access? How is the sensory information from an object transformed into an experience that enters conscious awareness? The neural mechanisms involved are like a black box,........ Read more »

  • May 7, 2010
  • 01:00 PM

Bullying and Emotional Intelligence on the Web

by Krystal D'Costa in Anthropology in Practice

Formspring, a recent entry into the social networking milieu, is finally beginning to attract mainstream  attention as parents and educators have to deal with the fallout from preteens and teens who are confronted with ugly criticism on the site. Formspring allows users to post and answer questions, some of which are rather personal. And as users link the site to Facebook and other popular

... Read more »

  • May 7, 2010
  • 12:53 PM

Spinning ellipses perplex the visual system

by Dave in The Daily Monthly

Take a look at this video (Click on the image to play, QuickTime required):

Which ellipse is rotating faster?
While at first it seems quite obvious that the ellipse on the right is rotating faster, if you download the movie and play in loop mode, by counting rotations you should be able to convince yourself that they [...]... Read more »

  • May 7, 2010
  • 11:50 AM

Compensating for alien genes…

by Jim Caryl in mental indigestion

“FROM the perspective of a bacterium, higher eukaryotes are oversexed, unadventurous and reproduce in an inconvenient way.” So says Pål Johnsen and Bruce Levin in their commentary of today’s article for discussion, and nary a truer word said; but in retort one may ask: inconvenient as reproduction may be, bacteria clearly have no sense of [...]

[[ More below the fold - follow me in ]]

... Read more »

  • May 7, 2010
  • 10:31 AM

Connecting Left and Right

by Kevin Mitchell in Wiring the Brain

Organisms with a bilaterally symmetric nervous system face a problem – how to integrate functions across the two sides so that behavioural outputs can be coordinated for the entire body.  In the brain this is important to allow integration of the large number of cognitive “modules” which are differentially lateralised, such as language.  (The importance of this communication is dramatically illustrated by so-called “split-brain” patients, who have had the majority of the connection........ Read more »

Srour M, Rivière JB, Pham JM, Dubé MP, Girard S, Morin S, Dion PA, Asselin G, Rochefort D, Hince P.... (2010) Mutations in DCC cause congenital mirror movements. Science (New York, N.Y.), 328(5978), 592. PMID: 20431009  

Renier N, Schonewille M, Giraudet F, Badura A, Tessier-Lavigne M, Avan P, De Zeeuw CI, & Chédotal A. (2010) Genetic dissection of the function of hindbrain axonal commissures. PLoS biology, 8(3). PMID: 20231872  

  • May 7, 2010
  • 10:03 AM

The Dwarf Dinosaurs of Haţeg Island

by Brian Switek in Dinosaur Tracking

For hundreds of years, people have been finding the remains of dinosaurs and other prehistoric creatures in Romania’s Haţeg basin. The Cretaceous-age deposits are remnants of prehistoric islands that sported their own unique faunas, but in the days before fossils were recognized as being the remains of once-living animals, many considered them to be the [...]... Read more »

  • May 7, 2010
  • 09:02 AM

Shining Light on the Walking Pathway

by Promega Corporation in Promega Connections

Central pattern generators (CPGs) are neural networks in the spinal cord that generate the rhythmic patterns observed in many complex movements like chewing, breathing and walking. Within CPGs excitatory glutamatergic neurons have been implicated in generating these rhythmic patterns, and glutamatergic neurons in the hindbrain region that extend into the spinal cord are thought to [...]... Read more »

  • May 7, 2010
  • 08:59 AM

Intravenous morphine at 0.1 mg/kg is not effective for controlling severe acute pain in the majority of patients

by Rogue Medic in Rogue Medic

Also posted over at Paramedicine 101 and at Research Blogging. Go check out the rest of the excellent material at both sites.The EMS Garage also covers pain management on the 5/07/10 podcast. EMS Garage - Episode 84. Go listen to that, as well. Chris Montera, Dr. Keith Wesley, Will Dunn, Kyle David Bates, Kelly Grayson, and I discussed several aspects of prehospital pain management.I have been meaning to cover the research on prehospital pain management for a long time. I did write about one exc........ Read more »

  • May 7, 2010
  • 08:00 AM

Light at the End of the Tunnel or Too Much Carbon Dioxide?

by Shaheen Lakhan in Brain Blogger

The connection between mind and body is never as ambiguous as when the body is near death. Reports of near-death experiences (NDEs) in people who suffer cardiac arrest or other life-threatening traumas are unexplained by current science. Theories of psychological, physiological, and transcendental causes abound, but none has defined the true source of the phenomenon. [...]... Read more »

Lai CF, Kao TW, Wu MS, Chiang SS, Chang CH, Lu CS, Yang CS, Yang CC, Chang HW, Lin SL.... (2007) Impact of near-death experiences on dialysis patients: a multicenter collaborative study. American journal of kidney diseases : the official journal of the National Kidney Foundation, 50(1), 124. PMID: 17591532  

  • May 7, 2010
  • 08:00 AM

Is Diabetes a Surgical Disease?

by Arya M. Sharma in Dr. Sharma's Obesity Notes

Yesterday, I chaired and spoke at the opening session of the 1st Canadian National Summit on Metabolic Surgery, currently being held in Montreal, Quebec.
I reminded the audience that diabetes currently affects more than 3 million Canadians, a number that is expected to reach 3.7 million by 2020 as we continue to see the impact of the [...]... Read more »

Buchwald H, Avidor Y, Braunwald E, Jensen MD, Pories W, Fahrbach K, & Schoelles K. (2004) Bariatric surgery: a systematic review and meta-analysis. JAMA : the journal of the American Medical Association, 292(14), 1724-37. PMID: 15479938  

Buchwald H, Estok R, Fahrbach K, Banel D, Jensen MD, Pories WJ, Bantle JP, & Sledge I. (2009) Weight and type 2 diabetes after bariatric surgery: systematic review and meta-analysis. The American journal of medicine, 122(3), 248-25600000. PMID: 19272486  

  • May 7, 2010
  • 08:00 AM

Ancient Sex Scandals: Did We Get It On With Neandertals?

by Christie Wilcox in Observations of a Nerd

This week, Science published two papers about the genetics of Neandertals from a team of scientists based at the Max Planck Institute of Evolutionary Anthropology. The first (which is the only one anyone seems to really care about) gives a draft version of the entire Neandertal genome - a whopping 4 billion base pairs of DNA. They use this information to look for genomic regions that may have been affected by positive selection in ancestral modern humans that led to their separation from Neander........ Read more »

Green, R., Krause, J., Briggs, A., Maricic, T., Stenzel, U., Kircher, M., Patterson, N., Li, H., Zhai, W., Fritz, M.... (2010) A Draft Sequence of the Neandertal Genome. Science, 328(5979), 710-722. DOI: 10.1126/science.1188021  

  • May 7, 2010
  • 07:00 AM

Small-scale, eco-friendly farms key to preserving tropical biodiversity

by Rob Goldstein in Conservation Maven

... Read more »

  • May 7, 2010
  • 02:28 AM

Better the metagenome you know than the metagenome you don't

by Daemios in Rudimenthos

A look into an in-vitro approach of metagenome benchmarking...... Read more »

  • May 7, 2010
  • 12:56 AM

Neury Thursday: Mushrooms and Memories

by Allison in Dormivigilia

Not many people perceive the honeybee as a model organism in genetics and/or neuroscience (or as I learned this week, a horse model of circadian biology, which I discovered while browsing through the posters for the upcoming Society for Research on Biological Rhythms meeting). This week, as published in the Journal of Neuroscience, European scientists [...]... Read more »

  • May 7, 2010
  • 12:42 AM

Friday Weird Science: Orgiastic Loss of Consciousness

by Evil Monkey in Neurotopia

This is actually a repost. But it's still hilarious. Sci DID have something good all lined up, but then she went out for this DINNER. And it was a REALLY good dinner, and now I'm really full and it's late and Sci is SO FULL AND SLEEPY AND (kind of inebriated...). So, repost. And next week will be a hilarious weird science that's going to blow your mind.

I have to say, for this Weird Science Friday, it was a tough call between this one and the other paper I found about the effects of Proza........ Read more »

Needles, W. (1953) A note of orgiastic loss of consciousness. Psychoanalytic Quarterly, 22(4). info:/

  • May 6, 2010
  • 11:19 PM

There is a little bit of Neanderthal in many of us

by Iddo Friedberg in Byte Size Biology

Big party at Science journal today, with the publication of a comprehensive draft Neanderthal genome. (Free access, nice going Science). Actually, it is a partially assembled draft of 60% of the total genome, but 60% of the genome from a human that was last seen on Earth 28,000 years ago is quite an achievement. The [...]... Read more »

Green, R., Krause, J., Briggs, A., Maricic, T., Stenzel, U., Kircher, M., Patterson, N., Li, H., Zhai, W., Fritz, M.... (2010) A Draft Sequence of the Neandertal Genome. Science, 328(5979), 710-722. DOI: 10.1126/science.1188021  

  • May 6, 2010
  • 11:18 PM

The culture gap and other really inconvenient truths

by Paul Spraycar in Beyond Climate Change

Climate change is not a new concept. Indeed, many environmental problems either caused or made worse by human behavior are well-known, at least among the scientists who study them.But despite warnings from these same scientists over the last two decades, little has been done.Paul Ehrlich, the renowned Stanford biologist, is ready to change that. Ehrlich is launching a new initiative – the Millennium Assessment of Human Behavior (MAHB) – to address the fact that, for some time scientists have........ Read more »

  • May 6, 2010
  • 11:04 PM

Pathological Shyness as a Pathway to Alcoholism

by William Yates, M.D. in Brain Posts

Alcohol abuse and dependence risk is influenced by a variety of mental disorders. Probably the strongest association is between antisocial personality, alcohol and drug abuse. But anxiety and mood disorders also commonly influence the risk of developing a substance abuse problem.A recent study examined the association between alcohol use disorder and social anxiety disorder. Social anxiety disorder is defined as a pervasive anxiety related to human interaction. Patients with social anxiety c........ Read more »

  • May 6, 2010
  • 07:50 PM

Dig-in Or Adapt: The Effect of Political Views on Changing One’s Mind

by Darcy Cowan in Skepticon

Are you the sort of person who will change their position on a subject conditional on further information gained? I personally think this is the behaviour we should all be striving for. If we do not we end up withdrawing further and further from reality, insulating ourselves from rational argument and retreating into our own [...]... Read more »

  • May 6, 2010
  • 06:13 PM

Mice That Fight for Their Rights

by Neuroskeptic in Neuroskeptic

Israeli biologists Feder et al report on Selective breeding for dominant and submissive behavior in Sabra mice.Mice are social animals and like many species, they show dominance hierarchies. When they first meet, they'll often fight each other. The winner gets to be Mr (or Mrs) Big, and they enjoy first pick of the food, mating opportunities, etc - for as long as they can remain dominant.But what determines which mice become top dog... ? Feder et al show that it's partially under genetic control........ Read more »

Feder, Y., Nesher, E., Ogran, A., Kreinin, A., Malatynska, E., Yadid, G., & Pinhasov, A. (2010) Selective breeding for dominant and submissive behavior in Sabra mice. Journal of Affective Disorders. DOI: 10.1016/j.jad.2010.03.018  

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