Allison

173 posts · 95,039 views

Dormivigilia
173 posts

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  • August 15, 2014
  • 06:49 PM
  • 99 views

A non-invasive system to replace EEG/EMG recording of sleep

by Allison in Dormivigilia

Researchers highlight a new system that is ideal for high-throughput (large numbers of animals) studies for recording sleep. A game changer for sure. ... Read more »

  • August 6, 2014
  • 12:03 AM
  • 113 views

Galen may have been (partly) right.

by Allison in Dormivigilia

Research in California has re-opened the ancient medical texts by identifying factors in the blood of young adult mice that may slow the rate of neurodegeneration in aged mice. Even Steven Colbert digs it. ... Read more »

Villeda, S., Plambeck, K., Middeldorp, J., Castellano, J., Mosher, K., Luo, J., Smith, L., Bieri, G., Lin, K., Berdnik, D.... (2014) Young blood reverses age-related impairments in cognitive function and synaptic plasticity in mice. Nature Medicine, 20(6), 659-663. DOI: 10.1038/nm.3569  

  • July 20, 2014
  • 11:47 AM
  • 102 views

Neury Thursday: mitochondria, neuron health, and sufficient sleep

by Allison in Dormivigilia

Researchers have uncovered further evidence as to why partial sleep deprivation degrades neuron health at a microscopic level... Read more »

  • July 7, 2014
  • 11:27 PM
  • 126 views

The Refs are Biased, Neurologically

by Allison in Dormivigilia

During the last World Cup, a study was published that outlined why the human eye and human perception is fatly at certain angles. ... Read more »

Kranjec A, Lehet M, Bromberger B, Chatterjee A. (2010) A Sinister Bias for Calling Fouls in Soccer. PLoS One, 5(7). info:/10.1371/journal.pone.0011667

  • April 29, 2014
  • 04:52 PM
  • 231 views

Characterizing Sleep and Wake in the Cat

by Allison in Dormivigilia

The cat is not a new model of sleep. In fact, it is one of the oldest. This study better characterized the electrophysiological output that corresponds with sleep and wake using local field potential recordings and how the sleep states temporally corresponded with neuronal activity in the somatosensory cortex. This is a model of memory consolidation. ... Read more »

  • April 21, 2014
  • 04:27 PM
  • 239 views

Daylight Savings is a Public Health Concern. Who is responsible? The circadian system or sleep homeostat?

by Allison in Dormivigilia

A study published in 2013 did a US examination of the risk for heart attack from falling back or springing forward (Daylight Savings). The results mirror those of a landmark study on the subject. But neither study seems to think that disruption of circadian rhythms is responsible, but rather that one hour of precious sleep lost or gained...... Read more »

Jiddou MR, Pica M, Boura J, Qu L, & Franklin BA. (2013) Incidence of myocardial infarction with shifts to and from daylight savings time. The American journal of cardiology, 111(5), 631-5. PMID: 23228926  

  • March 3, 2014
  • 09:00 AM
  • 264 views

Life (for a mouse) sucks without Bmal1

by Allison in Dormivigilia

Scientists have uncovered a host of pathological consequences in liver- and mitochondrial-pathways in the absence of Bmal1. These studies lend further credence to Bmal1 being important for rhythms of metabolism. These critters are certainly no star athletes. ... Read more »

Peek CB, Affinati AH, Ramsey KM, Kuo HY, Yu W, Sena LA, Ilkayeva O, Marcheva B, Kobayashi Y, Omura C.... (2013) Circadian clock NAD cycle drives mitochondrial oxidative metabolism in mice. Science (New York, N.Y.), 342(6158), 1243417. PMID: 24051248  

  • February 13, 2014
  • 11:00 AM
  • 791 views

Neury Thursday: Genotypic Insights on Dopamine, Modafinil, and Sleep

by Allison in Dormivigilia

A recent study in the Journal of Neuroscience uncovers genetic sensitivity to drugs that increase dopamine concentrations and their subsequent effects on sleep in humans. These studies raise important concerns for primary care practitioners when prescribing meds. ... Read more »

Holst SC, Bersagliere A, Bachmann V, Berger W, Achermann P, & Landolt HP. (2014) Dopaminergic role in regulating neurophysiological markers of sleep homeostasis in humans. The Journal of neuroscience : the official journal of the Society for Neuroscience, 34(2), 566-73. PMID: 24403155  

  • January 20, 2014
  • 11:07 AM
  • 303 views

Gender Influences Sleep Amount and Subsequent Physiology

by Allison in Dormivigilia

Very good friends of mine examined the relationship between actual bed time and underlying physiology in a huge cohort of male versus female college students. Perhaps we should be more sensitive to others' complaints of sleep. ... Read more »

Van Reen E, Sharkey KM, Roane BM, Barker D, Seifer R, Raffray T, Bond TL, & Carskadon MA. (2013) Sex of College Students Moderates Associations among Bedtime, Time in Bed, and Circadian Phase Angle. Journal of biological rhythms, 28(6), 425-31. PMID: 24336420  

  • December 24, 2013
  • 04:25 PM
  • 366 views

How not to Write an Original Science Paper

by Allison in Dormivigilia

A recent study in the Journal of Clinical Investigation is a good representative example of bad data organization and presentation. I usually refrain from criticizing studies because I'd like reviewers to give me the same benefit of the doubt, but this is beyond acceptable for such a high-impact journal. ... Read more »

Musiek ES, Lim MM, Yang G, Bauer AQ, Qi L, Lee Y, Roh JH, Ortiz-Gonzalez X, Dearborn JT, Culver JP.... (2013) Circadian clock proteins regulate neuronal redox homeostasis and neurodegeneration. The Journal of clinical investigation, 123(12), 5389-400. PMID: 24270424  

  • December 6, 2013
  • 01:00 PM
  • 298 views

Rethinking the Nucleus Accumbens: Regulating Sleep

by Allison in Dormivigilia

The accumbens is historically classified as a reward center. But recent research in animal models shows that it also regulates sleep-This is no surprise, right? Don't you have to hypothetically be awake in order to partake in something pleasurable?... Read more »

  • November 3, 2013
  • 11:22 AM
  • 342 views

Novel Means to Quantify Physiological Sleepiness

by Allison in Dormivigilia

My postdoctoral laboratory has published a methods paper in the recent issue of Sleep that provides a means to determine physiological sleepiness as it occurs, not de facto. They are mice after all, but if these findings were extrapolated to humans, then the scary reality of just a few hours of sleep loss is apparent-a moving body in a brain that is essentially asleep. ... Read more »

  • October 5, 2013
  • 04:30 PM
  • 375 views

Revisiting Caffeinated Alcoholic Beverages: Effects on Sleep

by Allison in Dormivigilia

After getting college students hammered via caffeine-infused alcohol (most like Red Bull-vodkas), the researchers surprisingly found that these drinks have little effect on sleep. Their effects on risks for addiction and brain health is a different story...... Read more »

  • October 5, 2013
  • 03:30 PM
  • 369 views

Neury Thursday: Sleep in Worms Cont'd

by Allison in Dormivigilia

Worms have a sleep-like state known as lethargus in between their molting cycles. Researchers in Germany carefully studied lethargus at behavioral, physiologically, and cellular levels providing convincing evidence that worms and their nervous system works in similar manners to control daily sleep. ... Read more »

  • September 14, 2013
  • 03:30 PM
  • 334 views

Neury Thursday: Neuroglia and Sleep

by Allison in Dormivigilia

Researchers have creatively examined the oligodendrocyte genome by exclusively studying mRNA bound to ribosomes. Not a surprise that biological factors regulating cell proliferation are augmented during sleep and see a sharp decline with sleep deprivation .... Read more »

Bellesi M, Pfister-Genskow M, Maret S, Keles S, Tononi G, & Cirelli C. (2013) Effects of sleep and wake on oligodendrocytes and their precursors. The Journal of neuroscience : the official journal of the Society for Neuroscience, 33(36), 14288-300. PMID: 24005282  

  • July 6, 2013
  • 05:00 PM
  • 314 views

Basic Mechanisms of Sleep Cont'd

by Allison in Dormivigilia

Researchers used optogenetics to elucidate the role of MCH-containing neurons in the hypothalamus on daily sleep amounts. It's clear by this point that optogenetics is the preferred approach for understanding the mechanisms of sleep and wake. ... Read more »

Konadhode, R., Pelluru, D., Blanco-Centurion, C., Zayachkivsky, A., Liu, M., Uhde, T., Glen, W., van den Pol, A., Mulholland, P., & Shiromani, P. (2013) Optogenetic Stimulation of MCH Neurons Increases Sleep. Journal of Neuroscience, 33(25), 10257-10263. DOI: 10.1523/JNEUROSCI.1225-13.2013  

  • July 2, 2013
  • 05:30 PM
  • 295 views

Veggie Tales: Not far from the Truth

by Allison in Dormivigilia

A handful of really creative researchers found evidence for biological clocks in a variety of garden veggies. Further, the rates of herbivory varied with the type of light-dark cycle (normal vs abnormal). Cool stuff!... Read more »

  • June 16, 2013
  • 11:24 PM
  • 358 views

Rhythms of Songbirds: City vs Nature

by Allison in Dormivigilia

It's true. Light pollution doesn't treat a songbird nicely... Read more »

Dominoni, D., Helm, B., Lehmann, M., Dowse, H., & Partecke, J. (2013) Clocks for the city: circadian differences between forest and city songbirds. Proceedings of the Royal Society B: Biological Sciences, 280(1763), 20130593-20130593. DOI: 10.1098/rspb.2013.0593  

  • June 5, 2013
  • 11:09 PM
  • 329 views

Bmal1 and Body Composition

by Allison in Dormivigilia

Researchers investigated the effects of a null Bmal1 deletion on glucose and fat metabolism. The results are consistent with previous studies, providing more clarity that Bmal1 regulates metabolism. ... Read more »

  • May 26, 2013
  • 11:45 PM
  • 370 views

First Postdoc Paper: Jetlag, Inflammation, and Sleep Loss

by Allison in Dormivigilia

We re-evaluated the impact of jet lag and sleep loss on the inflammatory response. Jet lag wins, body loses. ... Read more »

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