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All posts; Tags Include "Neurosurgery"

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  • December 23, 2016
  • 06:13 AM

Bad news for DARPA's RAM program: Electrical Stimulation of Entorhinal Region Impairs Memory

by The Neurocritic in The Neurocritic

The neural machinery that forms new memories is fragile and vulnerable to insults arising from brain injuries, cerebral anoxia, and neurodegenerative diseases such as Alzheimer's. Unlike language, which shows a great deal of plasticity after strokes and other injuries, episodic memory – memory for autobiographical events and contextual details of past experiences – doesn't recover after

... Read more »

  • June 28, 2015
  • 04:05 AM

Who Will Pay for All the New DBS Implants?

by The Neurocritic in The Neurocritic

Recently, Science and Nature had news features on big BRAIN funding for the development of deep brain stimulation technologies. The ultimate aim of this research is to treat and correct malfunctioning neural circuits in psychiatric and neurological disorders. Both pieces raised ethical issues, focused on device manufacturers and potential military applications, respectively.A different ethical concern, not mentioned in either article, is who will have access to these new devices, and who is goin........ Read more »

  • March 20, 2015
  • 10:44 PM

More Neurosurgeons Will Be Needed As Population Ages

by Marie Benz in Medical Research Interviews and News Interview with: Uzma Samadani, MD, PhD Chief of Neurosurgery, New York Harbor Health Care System Assistant Professor, Departments of Neurosurgery, Psychiatry, Neuroscience and Physiology Co-Director, Steven and Alexandra Cohen Veterans Center NYU Langone Medical Center Medical Research: What is … Continue reading →
The post More Neurosurgeons Will Be Needed As Population Ages appeared first on MedicalResearc........ Read more » Interview with:, & Uzma Samadani, MD, PhD. (2015) More Neurosurgeons Will Be Needed As Population Ages. info:/

  • December 25, 2014
  • 06:00 PM

Eliciting Mirth and Laughter via Cortical Stimulation

by The Neurocritic in The Neurocritic

Ho ho ho!“Laughter consists of both motor and emotional aspects. The emotional component, known as mirth, is usually associated with the motor component, namely, bilateral facial movements.”-Yamao et al. (2014)The subject of laughter has been under an increasing amount of scientific scrutiny.  A recent review by Dr. Sophie Scott and colleagues (Scott et al., 2014) emphasized that laughter is a social emotion. During conversations, voluntary laughter by the speaker is a communicative a........ Read more »

LÜDERS, H., LESSER, R., HAHN, J., DINNER, D., MORRIS, H., WYLLIE, E., & GODOY, J. (1991) BASAL TEMPORAL LANGUAGE AREA. Brain, 114(2), 743-754. DOI: 10.1093/brain/114.2.743  

Scott, S., Lavan, N., Chen, S., & McGettigan, C. (2014) The social life of laughter. Trends in Cognitive Sciences, 18(12), 618-620. DOI: 10.1016/j.tics.2014.09.002  

Wild, B., & et al. (2003) Neural correlates of laughter and humour. Brain, 126(10), 2121-2138. DOI: 10.1093/brain/awg226  

Yamao, Y., Matsumoto, R., Kunieda, T., Shibata, S., Shimotake, A., Kikuchi, T., Satow, T., Mikuni, N., Fukuyama, H., Ikeda, A.... (2014) Neural correlates of mirth and laughter: A direct electrical cortical stimulation study. Cortex. DOI: 10.1016/j.cortex.2014.11.008  

  • November 21, 2013
  • 06:13 AM

New Deep Brain Stimulation System Measures Neurotransmitter Release

by The Neurocritic in The Neurocritic

Wireless Instantaneous Neurotransmitter Concentration Sensing System (WINCS) Patient Module printed circuit board & sterilizable case. (Fig. 1, Kimble et al. 2009). Last month, the New York Times reported that the Defense Advanced Research Projects Agency (DARPA) will spend $70 million to further the development of technologies that use deep brain stimulation (DBS), which has been highly successful in treating Parkinson's Disease (PD). The SUBNETS program (Systems-Based Neurotechnology........ Read more »

Kimble CJ, Johnson DM, Winter BA, Whitlock SV, Kressin KR, Horne AE, Robinson JC, Bledsoe JM, Tye SJ, Chang SY.... (2009) Wireless Instantaneous Neurotransmitter Concentration Sensing System (WINCS) for intraoperative neurochemical monitoring. Conference proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society., 4856-9. PMID: 19963865  

  • September 30, 2013
  • 05:42 AM

A Neural Circuit for Voracious Overeating in Mice: Translation to Humans

by The Neurocritic in The Neurocritic

Optogenetic activation of inhibitory GABA neurons projecting from the limbic forebrain to the lateral hypothalamus causes this mouse to binge on cheese. The rapid onset and offset of the intense feeding behavior is striking. Credit: Jennings et al. (2013).The hypothalamus is a collection of discrete nuclei in the vertebrate diencephalon that control a variety of metabolic, neuroendocrine, and circadian functions. Since the 1940s, the ventromedial nucleus (VM) has been known for its important ro........ Read more »

  • March 8, 2013
  • 12:49 PM

Deep Brain Stimulation for Severe Anorexia Nervosa

by Tetyana in Science of Eating Disorders

This week, a team of researchers from the University of Toronto published a paper in The Lancet describing the results of a small study using deep brain stimulation (DBS) to treatment severe/chronic anorexia nervosa. Major news outlets, including the BBC, reported on the findings. A few people emailed and messaged me asking me to do a post about it (which is cool! I love it!). So here it is.
DBS is a surgical procedure that involves implanting an electrode that delivers electrical........ Read more »

  • February 27, 2013
  • 11:47 PM

Can a Slow-Growing Brain Tumor Cause a Gambling Problem?

by The Neurocritic in The Neurocritic

Maureen O’Connor, former mayor of San Diego and heir to her late husband Robert O. Peterson’s Jack-in-the-Box fortune, won over $1 billion playing video poker over the course of 9 years (2000-2009), according to U-T San Diego. However, she lost an even greater amount during that time, resulting in a net gambling debt of $13 million. To cover some of these losses, she transferred $2 million from her husband's nonprofit foundation to her personal bank account. She was recently charged with m........ Read more »

  • January 19, 2012
  • 08:27 PM

Deep Brain Stimulation for Bipolar Depression

by The Neurocritic in The Neurocritic

The Melancholia of Kirsten Dunst and Lars von Trier“Gray wool, clinging to my legs, it's heavy to carry along” The disastrous wedding reception of the severely depressed Justine precedes the end of the world, depicted as a highly stylized and artistic event feared by some but welcomed by others. Kirsten Dunst plays the role of von Trier's own melancholia, which was the inspiration for his film. The image above occurred out of context, at the very beginning, during the bombastic Wagner........ Read more »

  • October 14, 2010
  • 01:53 PM

Brain Tutor HD iPad App Review

by William Yates, M.D. in Brain Posts

I have previously posted a review of the brain imaging applications Brain Tutor and 3D Brain.  My original review of the two applications for the iPhone and iPod Touch is located here and a review of the applications for the iPad are located here.The original iPad review noted that the iPad versions of both applications were essentially the iPhone version with the common 2x modification that essential doubles the size of the image to accommodate the larger screen with the iPad.  There ........ Read more »

Estevez ME, Lindgren KA, & Bergethon PR. (2010) A novel three-dimensional tool for teaching human neuroanatomy. Anatomical sciences education. PMID: 20939033  

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