An objection that is commonly raised against Esperanto and other auxiliary languages is that they are “invented.” Somehow, being “invented” is assumed to give Esperanto a shady character: it’s just not natural. The problem with this view is that – … Continue reading →... Read more »
In honor of Mr. Charlie Darwin’s birthday I thought I would read an evolution paper. Put that together with the turn my career has taken into ecotoxicology (and the associated steep learning curve), I was steered towards a study about adapting to pollution.Let me start by introducing you to today’s study organism: The mummichog (Fundulus heteroclitus) is a species of non-migratory killifish found along the Atlantic coast of North America. They can be found in the brackish waters of tidal cre........ Read more »
Adam M. Reitzel, Sibel I. Karchner, Diana G. Franks, Brad R. Evans, Diane Nacci, Denise Champlin, Verónica M. Vieira, & Mark E. Hahn. (2014) Genetic variation at aryl hydrocarbon receptor (AHR) loci in populations of Atlantic killifish (Fundulus heteroclitus) inhabiting polluted and reference habitats. BMC Evolutionary Biology, 14(1), 6. DOI: 10.1186/1471-2148-14-6
Hi Julie and Mia, I wanted to update you on some unique but exciting research that I conducted while working toward my Ph.D. at the University of Florida’s Canine Cognition and Behavior Lab. This particular research focuses on the welfare of wolves and wolf-dog “hybrids” in private sanctuaries.The common use of the term “hybrid” is perhaps the first indication of how poorly we understand these animals. The term “hybrid” is technically inaccurate – as wolves and domestic dogs are ........ Read more »
Mehrkam Lindsay R., Verdi Nicolle T., & Wynne Clive D. L. (2014) Human Interaction as Environmental Enrichment for Pair-Housed Wolves and Wolf–Dog Crosses. Journal of Applied Animal Welfare Science, 17(1), 43-58. DOI: 10.1080/10888705.2014.856246
* This post is a companion to the previous one in which I talked about antioxidants and cancer in a more general manner. Here I will focus on one particular scientific article. A study recently published in Science Translational Medicine … Continue reading →... Read more »
Sayin VI, Ibrahim MX, Larsson E, Nilsson JA, Lindahl P, & Bergo MO. (2014) Antioxidants accelerate lung cancer progression in mice. Science translational medicine, 6(221). PMID: 24477002
This is part of a series exploring the brains behind exceptional memory: to what extent is it natural and learnt? How fast can a complete...... Read more »
Nyberg L, Sandblom J, Jones S, Neely AS, Petersson KM, Ingvar M, & Bäckman L. (2003) Neural correlates of training-related memory improvement in adulthood and aging. Proceedings of the National Academy of Sciences of the United States of America, 100(23), 13728-33. PMID: 14597711
CPB Using Galaxy 2 from Galaxy Project on Vimeo. for loading and using datatypes and the OpenHelix Galaxy tutorial for getting familiar with Galaxy interface and usage. Metagenomics analysis can be a bit daunting at times, but there are a good number of tools out there to assist a researcher in analysis. Integrated Microbial Genomes at […]... Read more »
Nicola Segata, Levi Waldron, Annalisa Ballarini, Vagheesh Narasimhan, Olivier Jousson . (2012) Metagenomic microbial community profiling using unique clade-specific marker genes. Nature Methods, 811-814. info:/doi:10.1038/nmeth.2066
A demographic study of Asian elephants compiling six years of observations to determine vital rates such as reproduction, fecundity and counts of indjuries and mortalities.... Read more »
de Silva S, Webber CE, Weerathunga US, Pushpakumara TV, Weerakoon DK, & Wittemyer G. (2013) Demographic variables for wild asian elephants using longitudinal observations. PloS one, 8(12). PMID: 24376581
Temporal order can be assessed in a rather straightforward experimental manner. Research subjects can be provided sequential auditory clicks, one to each ear. If the clicks are one second apart, nearly all participants can correctly identify whether or not the click in the right ear came before the one in the left ear. It turns out that this holds true even if the clicks are only 100 milliseconds (0.1 seconds) apart. The threshold for being able to correctly assign a temporal order to such brief........ Read more »
von Steinbüchel N. (1998) Temporal ranges of central nervous processing: clinical evidence. Experimental brain research, 123(1-2), 220-33. PMID: 9835412
The remains of a one-year-old boy who died 12,600 years ago in what’s now Montana are giving up exceptional information about the place his people held in American history, and the origins of Native Americans on both continents of the New World.... Read more »
Morten Rasmussen et al. (2014) The genome of a Late Pleistocene human from a Clovis burial site in western Montana. Nature. DOI: 10.1038/nature13025
Astronomers have found that only "strongly interacting" binary stars have the ability to end with powerful, bipolar jets of gas and dust.
Monthly Notices of the Royal Astronomical Society
Nebula refers to a region or cloud of interstellar dust and gas appearing variously as a hazy bright or dark patch. It is also called as nebulosity.
Supernova refers to a catastrophic explosion of a large star in the l........ Read more »
Eric G. Blackman, Scott Lucchini. (2014) Using kinematic properties of pre-planetary nebulae to constrain engine paradigms. Monthly Notices of the Royal Astronomical Society. DOI: 10.1093/mnrasl/slu001
Being tickled is a rather weird phenomenon. Why can we not tickle ourselves, for example? And why does it make us laugh? Find out the strange stuff you didn't know about tickling!... Read more »
Bays PM, Flanagan JR, & Wolpert DM. (2006) Attenuation of self-generated tactile sensations is predictive, not postdictive. PLoS biology, 4(2). PMID: 16402860
In a recent article (citation below) Vandekerckhove, Bulnes and Panksepp put forward a theory of how consciousness has changed with the evolution of the brain. They envisage three types or stages of awareness: anoetic (without knowledge), noetic (with knowledge), and autonoetic (with meta-knowledge). The theory has each type building on the previous, both during evolution […]... Read more »
M. Vandekerckhove, L.C. Bulnes, & J. Panksepp. (2014) The emergence of primary anoetic consciousness in episodic memory. Frontiers in Behavioral Neuroscience. info:/10.3389/fnbeh.2013.00210
Many people are concerned that aversive-based dog training methods can have side-effects. A new study by Stéphanie Deldalle and Florence Gaunet (in press in the Journal of Veterinary Behavior) observes dogs and their humans at training classes using either positive or negative reinforcement. The results support the idea that positive reinforcement is beneficial for the canine-human bond and better for animal welfare.Photo: godrick / ShutterstockThe scientists looked at on-leash walking an........ Read more »
Casey, R., Loftus, B., Bolster, C., Richards, G., & Blackwell, E. (2013) Human directed aggression in domestic dogs (Canis familiaris): Occurrence in different contexts and risk factors. Applied Animal Behaviour Science. DOI: 10.1016/j.applanim.2013.12.003
Deldalle, S., & Gaunet, F. (2014) Effects of two training methods on stress-related behaviors of the dog (Canis familiaris) and on the dog-owner relationship. Journal of Veterinary Behavior: Clinical Applications and Research. DOI: 10.1016/j.jveb.2013.11.004
Gaunet, F. (2009) How do guide dogs and pet dogs (Canis familiaris) ask their owners for their toy and for playing?. Animal Cognition, 13(2), 311-323. DOI: 10.1007/s10071-009-0279-z
Rooney, N., & Cowan, S. (2011) Training methods and owner–dog interactions: Links with dog behaviour and learning ability. Applied Animal Behaviour Science, 132(3-4), 169-177. DOI: 10.1016/j.applanim.2011.03.007
Lots of recent evidence is demonstrating that lingual taste buds are just the tip of the iceberg. Taste receptors have been identified in parts of the respiratory, gastrointestinal, renal, and nervous systems. Taste receptor functions in non-gustatory tissues are related to feeding and hunger, nutrient sensing, and protective responses.
Studies have shown that the pancreas has umami and sweet receptors that work in insulin release. The gut has receptors for fat, umami, sweet and bitter. The........ Read more »
Sundaresan S, Shahid R, Riehl TE, Chandra R, Nassir F, Stenson WF, Liddle RA, & Abumrad NA. (2013) CD36-dependent signaling mediates fatty acid-induced gut release of secretin and cholecystokinin. FASEB journal : official publication of the Federation of American Societies for Experimental Biology, 27(3), 1191-202. PMID: 23233532
Kyriazis GA, Soundarapandian MM, & Tyrberg B. (2012) Sweet taste receptor signaling in beta cells mediates fructose-induced potentiation of glucose-stimulated insulin secretion. Proceedings of the National Academy of Sciences of the United States of America, 109(8). PMID: 22315413
Wauson EM, Zaganjor E, Lee AY, Guerra ML, Ghosh AB, Bookout AL, Chambers CP, Jivan A, McGlynn K, Hutchison MR, Deberardinis RJ, Cobb MH. (2012) The G protein-coupled taste receptor T1R1/T1R3 regulates mTORC1 and autophagy. Mol Cell., 47(6), 851-862. DOI: 10.1016/j.molcel.2012.08.001
Dehkordi O, Rose JE, Fatemi M, Allard JS, Balan KV, Young JK, Fatima S, Millis RM, & Jayam-Trouth A. (2012) Neuronal expression of bitter taste receptors and downstream signaling molecules in the rat brainstem. Brain research, 1-10. PMID: 22836012
Astronomers have reported the discovery of one of the most distant galaxies, dubbed Abell2744 Y1.
Astronomy and Astrophysics Letters
Redshift and previous findings:
Redshift refers to a shift in the spectrum of a celestial body toward longer wavelengths, or toward the red end of the spectrum, caused by its motion away from the Earth.
Previously, scientists reported a galaxy dubbed MACS1149-JD1 at a redshift of about 10, i.e. the galax........ Read more »
N. Laporte, A. Streblyanska, B. Clement, I. Pérez-Fournon, D. Schaerer, H. Atek, F. Boone, J.-P. Kneib, E. Egami, P. Martínez-Navajas, R. Marques-Chaves, R. Pelló, J. Richard. (2014) The first Frontier Fields cluster: 4.5mum excess in a z-8 galaxy candidate in Abell 2744 . Astronomy . DOI: 10.1051/0004-6361/201323179
Satellite technology reveals for the first time the diving behaviour of the mysterious reef manta ray.... Read more »
Braun CD, Skomal GB, Thorrold SR, & Berumen ML. (2014) Diving behavior of the reef manta ray links coral reefs with adjacent deep pelagic habitats. PLoS ONE, 9(2). PMID: 24516605
Scientists identify gene linking brain structure to intelligence
... Read more »
Desrivières S, Lourdusamy A, Tao C, Toro R, Jia T, Loth E, Medina LM, Kepa A, Fernandes A, Ruggeri B.... (2014) Single nucleotide polymorphism in the neuroplastin locus associates with cortical thickness and intellectual ability in adolescents. Molecular psychiatry. PMID: 24514566
There are some research models whose names seem silly, or at least named for a Taylor Swift song. Oddly enough, there is a large body of research on those who are “habitually sensitive toward victimization” and it turns out they tend to be uncooperative and immoral in “socially uncertain situations”. Apparently, the suspicion and mistrust […]
Empathy: Paving the road to preferential treatment with good intentions
Shooting the messenger: The intergroup sensitivity ef........ Read more »
Gollwitzer, M., Rothmund, T., & Süssenbach, P. (2013) The sensitivity to mean intentions (SeMI) model: Basic assumptions, recent findings, and potential avenues for future research. Social and Personality Psychology Compass, 415-426. DOI: 10.1111/spc3.12041
White matter fiber architecture of the brain. Human Connectome Project.A new study by researchers at the University of California, Berkeley has shown that chronic stress generates long-term changes in the brain that may explain why people suffering chronic stress are prone to mental problems such as anxiety and mood disorders later in life.The findings could lead to new therapies to reduce the risk of developing mental illness after stressful events.It's long known that people with stress-re........ Read more »
Chetty S, Friedman AR, Taravosh-Lahn K, Kirby ED, Mirescu C, Guo F, Krupik D, Nicholas A, Geraghty AC, Krishnamurthy A.... (2014) Stress and glucocorticoids promote oligodendrogenesis in the adult hippocampus. Molecular psychiatry. PMID: 24514565
A new method that couples microfluidics and super-resolution microscopy to image live bacteria at unsurpassed spatial and temporal resolutions has been developed. Uniquely, this technology considerably improves cell stability, allows for long time-lapse imaging and completely eliminates chromatic aberrations.
HFSP Career Development Award holder Marcelo Nollmann and Young Investigator Grant holder Tam Mignot and colleagues
Awardees Articles February 11, 2014 Human Frontier Science Program... Read more »
Diego I. Cattoni, Jean-Bernard Fiche, Alessandro Valeri, Tâm Mignot, Marcelo Nöllmann. (2013) Super-Resolution Imaging of Bacteria in a Microfluidics Device. PLOS ONE. DOI: 10.1371/journal.pone.0076268
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