Years ago, the relationship between depression and chronic pain was the hot topic, and it’s only more recently that anxiety and pain have become popular. So slightly tangentially, but I think you’ll see how it relates, today I want to muse a bit about health anxiety and some of the findings from this interesting area … Read more... Read more »
Muse, K., McManus, F., Hackmann, A., Williams, M., & Williams, M. (2010) Intrusive imagery in severe health anxiety: Prevalence, nature and links with memories and maintenance cycles. Behaviour Research and Therapy, 48(8), 792-798. DOI: 10.1016/j.brat.2010.05.008
Sharks consistently rank near the top of lists of American’s greatest fears. In reality, they have much more to fear from us than we do from them. Because of our actions, many species of sharks are on the verge of extinction. A recent International Union for the Conservation of Nature Shark Specialist Group report [...]... Read more »
Baum, J. (2003) Collapse and Conservation of Shark Populations in the Northwest Atlantic. Science, 299(5605), 389-392. DOI: 10.1126/science.1079777
Bonfil, R. (2005) Transoceanic Migration, Spatial Dynamics, and Population Linkages of White Sharks. Science, 310(5745), 100-103. DOI: 10.1126/science.1114898
Clarke, S., McAllister, M., Milner-Gulland, E., Kirkwood, G., Michielsens, C., Agnew, D., Pikitch, E., Nakano, H., & Shivji, M. (2006) Global estimates of shark catches using trade records from commercial markets. Ecology Letters, 9(10), 1115-1126. DOI: 10.1111/j.1461-0248.2006.00968.x
Conrath, C., & Musick, J. (2007) The Sandbar Shark Summer Nursery within Bays and Lagoons of the Eastern Shore of Virginia. Transactions of the American Fisheries Society, 136(4), 999-1007. DOI: 10.1577/T06-107.1
Dulvy, N., Baum, J., Clarke, S., Compagno, L., Cortés, E., Domingo, A., Fordham, S., Fowler, S., Francis, M., Gibson, C.... (2008) You can swim but you can't hide: the global status and conservation of oceanic pelagic sharks and rays. Aquatic Conservation: Marine and Freshwater Ecosystems, 18(5), 459-482. DOI: 10.1002/aqc.975
Musick, JA. (2000) Management of Sharks and their relatives (Elasmobranchii). Fisheries. info:/
Pikitch, E., Chapman, D., Babcock, E., & Shivji, M. (2005) Habitat use and demographic population structure of elasmobranchs at a Caribbean atoll (Glovers Reef, Belize). Marine Ecology Progress Series, 187-197. DOI: 10.3354/meps302187
Topelko, K., & Dearden, P. (2005) The Shark Watching Industry and its Potential Contribution to Shark Conservation. Journal of Ecotourism, 4(2), 108-128. DOI: 10.1080/14724040409480343
Walker, T. (1998) Can shark resources be harvested sustainably? A question revisited with a review of shark fisheries. Marine and Freshwater Research, 49(7), 553. DOI: 10.1071/MF98017
Ellen van Wilgenburg (University of Melbourne, Australia) and coworkers have shown that ants can sometimes discriminate between highly similar carbon-based compounds, depending on molecular chain length and branching unit position. This news feature was written on August 9, 2010.... Read more »
van Wilgenburg, E., Sulc, R., Shea, K. J., & Tsutsui, N. D. (2010) Deciphering the Chemical Basis of Nestmate Recognition. Journal of Chemical Ecology, 36(7), 751-758. DOI: 10.1007/s10886-010-9812-4
Last month I wrote about how electrical stimulation of the hippocampus causes temporary amnesia - Zapping Memories Away.Now Toronto neurologists Laxton et al have tried to use deep brain stimulation (DBS) to improve memory in people with Alzheimer's disease. Progressive loss of memory is the best-known symptom of this disorder, and while some drugs are available, they provide partial relief at best.This study stems from a chance discovery by the same Toronto group. In 2008, they reported that st........ Read more »
Laxton AW, Tang-Wai DF, McAndrews MP, Zumsteg D, Wennberg R, Keren R, Wherrett J, Naglie G, Hamani C, Smith GS.... (2010) A phase I trial of deep brain stimulation of memory circuits in Alzheimer's disease. Annals of neurology. PMID: 20687206
by Mary in OpenHelix
Every so often something comes up in your weekly literature search that makes you go: huh. That happened to me today with a paper on text mining. Now, I have used a variety of text-mining tools (Textpresso, iHOP, PubMatrix, XplorMed, etc are among the ones we have subscription tutorials on) and they have all sorts of strengths and weaknesses. And I’m convinced of the utility of them for making new connections, finding related literature, examining over-represented terms, etc. Because of ........ Read more »
Ishii, N., Koike, A., Yamamoto, Y., & Takagi, T. (2010) Figure classification in biomedical literature to elucidate disease mechanisms, based on pathways. Artificial Intelligence in Medicine, 49(3), 135-143. DOI: 10.1016/j.artmed.2010.04.005
Scientists from the University of Halifax in Nova Scotia, Canada have discovered photosynthetic algae living inside embryonic cells of the spotted salamander, providing them with extra power like a mean green energy drink. If true, this is the first known example of a vertebrate acquiring a new symbiont.
The spotted salamander [...]... Read more »
Henrey Orr. (1888) Note on the development of amphibians, chiefly concerning the central nervous system; with additional observations on the hypophysis, mouth, and the appendages and skeleton of the head. Quarterly Journal of Microscopical Science. info:/
Gilbert, P. (1944) The Alga-Egg Relationship in Ambystoma Maculatum, A Case of Symbiosis. Ecology, 25(3), 366. DOI: 10.2307/1931284
I seem to be in a bit of an ecosystem mood lately. Having looked at the effect of trees on the soil microbiome last week, today I'm looking at how the communities of soil bacteria are effected by a much greater disaster, forest fires. Bacteria are admittedly not the first thing most people think of in this situationTurning a large area of huge leafy richness into smoking remains covering an ash filled wasteland has many far-reaching effects on animals and plants alike, but the effect on bacteria........ Read more »
Ball, P., MacKenzie, M., DeLuca, T., & Montana, W. (2010) Wildfire and Charcoal Enhance Nitrification and Ammonium-Oxidizing Bacterial Abundance in Dry Montane Forest Soils. Journal of Environment Quality, 39(4), 1243. DOI: 10.2134/jeq2009.0082
These four papers all attempt to understand what controls the sediments that make up the streambed and floodplain and that get preserved in the geologic record. White et al. look at how riffle positions are governed by valley width variations, while Jerolmack and Brzinski find striking similarities in grain size transitions observed in rivers and dune fields. Hart et al. examine the relationship between glacial advances and downstream sediment deposition, while Sambrook Smith et al. investigate ........ Read more »
White, J., Pasternack, G., & Moir, H. (2010) Valley width variation influences riffle–pool location and persistence on a rapidly incising gravel-bed river. Geomorphology, 121(3-4), 206-221. DOI: 10.1016/j.geomorph.2010.04.012
Jerolmack, D., & Brzinski, T. (2010) Equivalence of abrupt grain-size transitions in alluvial rivers and eolian sand seas: A hypothesis. Geology, 38(8), 719-722. DOI: 10.1130/G30922.1
Hart, S., Clague, J., & Smith, D. (2010) Dendrogeomorphic reconstruction of Little Ice Age paraglacial activity in the vicinity of the Homathko Icefield, British Columbia Coast Mountains, Canada. Geomorphology, 121(3-4), 197-205. DOI: 10.1016/j.geomorph.2010.04.011
Sambrook Smith, G., Best, J., Ashworth, P., Lane, S., Parker, N., Lunt, I., Thomas, R., & Simpson, C. (2010) Can we distinguish flood frequency and magnitude in the sedimentological record of rivers?. Geology, 38(7), 579-582. DOI: 10.1130/G30861.1
We humans are masters of reinvention. And we love our dogs. Over the past 12,000 years we’ve mixed that love of innovation and love of dogs, to create a species with more physical variation than any other species on Earth. Much of this innovation has served us well. Domesticated dogs have protected our livestock and [...]... Read more »
Roberts T, McGreevy P, & Valenzuela M. (2010) Human induced rotation and reorganization of the brain of domestic dogs. PloS one, 5(7). PMID: 20668685
by Welkin Johnson in Small Things Considered
by Welkin Johnson It looks like a herpesvirus, but does it replicate like one? Electronmicrographs showing mature HHV-6 particles emerging from an infected cell. Source. Sometimes, discovery in biology is about discerning rules and sometimes it is about pursuing exceptions. In this spirit, Human Herpesvirus six (HHV-6), the etiologic agent of the common childhood illness roseola infantum, is shaping up...... Read more »
Arbuckle JH, Medveczky MM, Luka J, Hadley SH, Luegmayr A, Ablashi D, Lund TC, Tolar J, De Meirleir K, Montoya JG.... (2010) The latent human herpesvirus-6A genome specifically integrates in telomeres of human chromosomes in vivo and in vitro. Proceedings of the National Academy of Sciences of the United States of America, 107(12), 5563-8. PMID: 20212114
In a previous post, I suggested that writers were brain manipulators. Now I'm refining the description. It's more like a Vulcan mind meld.
A recent experiment by scientists at Princeton University shows neural coupling (coordinated brain activity) between a storyteller and a listener. The researchers used fMRI to scan a speaker’s brain as she told an unrehearsed story about an experience from high school. They then scanned 10 volunteers as they listened to a recording of the story.
The ba........ Read more »
Stephens GJ, Silbert LJ, & Hasson U. (2010) Speaker-listener neural coupling underlies successful communication. Proceedings of the National Academy of Sciences of the United States of America. PMID: 20660768
Between 23 and 16 million years ago, just outside of where the city of Lisbon, Portugal sits today, there lived a unique mix of mammals which would have seemed both strange and familiar. From bones and footprints left in fossilized feces, paleontologists have found that rhinoceros, deer, horses, antelope, and elephants browsed and grazed in [...]... Read more »
ANTUNES, M., BALBINO, A., & GINSBURG, L. (2006) Ichnological evidence of a Miocene rhinoceros bitten by a bear-dog (Amphicyon giganteus). Annales de Paléontologie, 92(1), 31-39. DOI: 10.1016/j.annpal.2005.10.002
ANTUNES, M., BALBINO, A., & GINSBURG, L. (2006) Miocene Mammalian footprints in coprolites from Lisbon, Portugal. Annales de Paléontologie, 92(1), 13-30. DOI: 10.1016/j.annpal.2005.09.002
Christine Argot. (2010) Morphofunctional analysis of the postcranium of Amphicyon major (Mammalia, Carnivora, Amphicyonidae) from the Miocene of Sansan(Gers, France) compared to three extant carnivores: Ursus arctos, Panthera leo, and Canis lupus. Geodivertistas, 32(1), 65-106. info:/
Sci had a chance to blog an interesting paper on the value of cocaine in rats (as compared to nice stuff like sugar), and someone pointed out to her that she authors had done a follow up! I think what they found in this followup is really rather exciting and has some very interesting implications [...]... Read more »
Cantin L, Lenoir M, Augier E, Vanhille N, Dubreucq S, Serre F, Vouillac C, & Ahmed SH. (2010) Cocaine is low on the value ladder of rats: possible evidence for resilience to addiction. PloS one, 5(7). PMID: 20676364
Nowadays green logistics is an often heard buzz-word, but already eleven years ago Beamon published an article about the challenges with creating Green Supply Chains.
Traditional vs. Extended Supply Chain
A traditional supply chain has been mostly a one-way street. The issues analyzed were eg. the number of echelons, buyer-supplier relationships and inventory levels.
As a basis the extended supply chain has to consider at least the recycling / re-use and remanufacturing processes to be com........ Read more »
Most neurons in the brain are not born in their final position – they are generated by cell division in one part of the brain and have to migrate, sometimes over long distances, along complicated routes, to finally arrive at their pre-specified destination. This process entails an incredibly complex and dynamic set of genetic instructions and interactions between different cell types. A prime example is the migration of interneurons to the cerebral cortex – these inhibitory neurons make........ Read more »
Kaneko N, Marín O, Koike M, Hirota Y, Uchiyama Y, Wu JY, Lu Q, Tessier-Lavigne M, Alvarez-Buylla A, Okano H.... (2010) New Neurons Clear the Path of Astrocytic Processes for Their Rapid Migration in the Adult Brain. Neuron, 67(2), 213-223. PMID: 20670830
For those of us in the northern hemisphere, summer is drawing to an end and that means back to school – and the annual wave of panic about head lice. It seems that cramming hundreds of children together in one building leads to lice outbreaks, panicky teachers, and distraught parents. Right on schedule, in last [...]... Read more »
Synthetic biology is a good candidate for the area of biology that will make the biggest difference to humanity in this century. Yes, neurobiology’s a contender; stem cell biology, too; and of course, I would argue systems biology is up there as well. But when you think about harnessing the power of biology to [...]... Read more »
Marguet P, Tanouchi Y, Spitz E, Smith C, & You L. (2010) Oscillations by minimal bacterial suicide circuits reveal hidden facets of host-circuit physiology. PloS one, 5(7). PMID: 20689598
When I practiced more traditional family medicine and saw my pregnant patients many rationalized rapid and extreme weight gains as a rite of pregnancy and not a worry because after all, they were "eating for two".It's probably time to rethink those attitudes.Last week a paper was published in the Lancet which looked at a within family comparison of pregnancy weight gain and baby birth weight.The study was rather enormous in scope capturing 513,501 women and their 1,164,750 children. The finding........ Read more »
David S. Ludwig, & Janet Currie. (2010) The association between pregnancy weight gain and birthweight: a within-family comparison. The Lancet. info:/10.1016/S0140- 6736(10)60751-9
Are experienced CCTV operators better than naive participants at judging from an unfolding scene on CCTV whether or not a crime is about to be committed? The short answer is no, they aren't. Presented with 24 real-life 15-second CCTV clips, and asked to predict which half ended just before a crime was about to be committed (examples included violence and vandalism) and which half were innocuous, 12 experienced CCTV operators managed just 55.5 per cent accuracy - no bette........ Read more »
Grant, D., & Williams, D. (2010) The importance of perceiving social contexts when predicting crime and antisocial behaviour in CCTV images. Legal and Criminological Psychology. DOI: 10.1348/135532510X512665
Some time ago I made this post - it was my preamble to my own personal caffiene exploration. At the end of it, I wrote the following in italics: And on a side note: I remember reading some time ago that warm drinks make people feel good. Or at least dial up their positive affect. I [...]... Read more »
Ijzerman H, & Semin GR. (2009) The thermometer of social relations: mapping social proximity on temperature. Psychological science : a journal of the American Psychological Society / APS, 20(10), 1214-20. PMID: 19732385
Griffitt, W. (1970) Environmental effects on interpersonal affective behavior: Ambient effective temperature and attraction. Journal of Personality and Social Psychology, 15(3), 240-244. DOI: 10.1037/h0029432
Zhong, C., & Leonardelli, G. (2008) Cold and Lonely: Does Social Exclusion Literally Feel Cold?. Psychological Science, 19(9), 838-842. DOI: 10.1111/j.1467-9280.2008.02165.x
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