Alireza Sibaei's Blog (20)

Disorders of Consciousness: How Should Clinicians Respond to New Therapeutic Interventions?

New tools have confirmed high rates of misdiagnosis of patients with chronic disorders of consciousness, such as the vegetative state. An increasing number of patients' families wish to use these novel techniques for diagnosis, prognosis, and treatment. An international team of researchers, including Dr. Éric Racine, researcher at the IRCM, analyzed the clinical, social and ethical issues that clinicians are now facing. Their article is published in the August…

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Added by Alireza Sibaei on August 6, 2012 at 11:04am — No Comments

Scientists Show How a Gene Duplication Helped Our Brains Become 'Human'

 

A team led by scientists at The Scripps Research Institute has shown that an extra copy of a brain-development gene, which appeared in our ancestors' genomes about 2.4 million years ago, allowed maturing neurons to migrate farther and develop more connections.



What genetic changes account for the vast behavioral differences between humans and other primates? Researchers so far…

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Added by Alireza Sibaei on May 5, 2012 at 5:35am — No Comments

Brain-Injury Data Used to Map Intelligence in the Brain

Scientists report that they have mapped the physical architecture of intelligence in the brain. Theirs is one of the largest and most comprehensive analyses so far of the brain structures vital to general intelligence and to specific aspects of intellectual functioning, such as verbal comprehension and working memory.

Their study, published in Brain: A Journal of Neurology, is unique in that it enlisted an…

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Added by Alireza Sibaei on April 11, 2012 at 6:59pm — No Comments

Neuroscientists Identify How the Brain Works to Select What We (Want To) See

If you are looking for a particular object -- say a yellow pencil -- on a cluttered desk, how does your brain work to visually locate it?

For the first time, a team led by Carnegie Mellon University neuroscientists has identified how different neural regions communicate to determine what to visually pay attention to and what to ignore. This finding is a major discovery for visual cognition and will guide future research…

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Added by Alireza Sibaei on February 22, 2012 at 11:25am — 1 Comment

Measuring the Dialogue Between Cortical Areas in Non-Communicating Patients

We know that conscious experience can be entirely generated within the brain as in the case, for instance, when we dream and we are completely disconnected from the external world. However, we normally assess another individual's level of consciousness solely based on her/his ability to interact with the external environment. This discrepancy becomes particularly relevant in the case of patients who survive severe brain injuries, who may recover consciousness…

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Added by Alireza Sibaei on January 7, 2012 at 5:15pm — 1 Comment

Fluorescent Protein Lights Up the Inner Workings of the Brain

The advance offers a nontoxic way to study how the organ works, and how disease impairs it.

nteractions between neurons involve both chemical and electrical signaling. For decades, neuroscientists have searched for a noninvasive way to measure the electrical component. Achieving this could make it easier to study how the brain works, and how neurological disease impairs its functioning.

One promising approach is tracking neuronal electrical activity…

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Added by Alireza Sibaei on December 11, 2011 at 12:00pm — No Comments

New Test for Consciousness in 'Comatose' Patients

The Coma Science Group (CRCyclotron, University of Liège /Liège University Hospital), led by Dr Steven Laureys, has developed, along with its partners in London, Ontario, (Canada) and Cambridge (England), a portable test which will permit a simpler and less expensive diagnosis of 'vegetative' patients who still have consciousness, despite the fact that they do not have the means to express it.

The researchers' conclusions are published…

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Added by Alireza Sibaei on November 13, 2011 at 5:33am — No Comments

Key to Survival of Brain Cells Discovered

 Nicolas G. Bazan, MD, Ph.D, Boyd Professor and Director of the Neuroscience Center of Excellence at LSU Health Sciences Center New Orleans, and David Stark, an MD/Ph.D student working in his lab, have discovered how a key chemical neurotransmitter that interacts with two receptors in the brain promotes either normal function or a disease process -- determining whether brain cells live or die.

The work is published and highlighted…

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Added by Alireza Sibaei on September 29, 2011 at 3:30pm — No Comments

Mind-Altering Microbes: Probiotic Bacteria May Lessen Anxiety and Depression

Probiotic bacteria have the potential to alter brain neurochemistry and treat anxiety and depression-related disorders according to research published in the Proceedings of the National Academy of Sciences.

The research, carried out by Dr Javier Bravo, and Professor John Cryan at the Alimentary Pharmabiotic Centre in University College Cork, along with collaborators from the Brain-Body…

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Added by Alireza Sibaei on August 31, 2011 at 4:58am — 1 Comment

How the Brain Stores Information for Short Periods of Time

Freiburg biologist Dr. Aristides Arrenberg and his American colleagues studied mechanisms used by the brain to store information for a short period of time. The cells of several neural circuits store information by maintaining a persistent level of activity: A short-lived stimulus triggers the activity of neurons, and this activity is then maintained for several seconds. The mechanisms of this information storage have not yet been sufficiently described, although this phenomenon… Continue

Added by Alireza Sibaei on August 26, 2011 at 3:17pm — No Comments

Neuroscientists Identify How the Brain Remembers What Happens and When

New York University neuroscientists have identified the parts of the brain we use to remember the timing of events within an episode. The study, which appears in the latest issue of the journal Science, enhances our understanding of how memories are processed and provides a potential roadmap for addressing memory-related afflictions.

Previous research has shown the brain's medial temporal lobe (MTL) has a significant role in declarative…

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Added by Alireza Sibaei on August 22, 2011 at 4:30pm — No Comments

Patients in a minimally conscious state remain capable of dreaming during their sleep

The question of sleep in patients with seriously altered states of consciousness has rarely been studied.

Do ‘vegetative’ patients (now also called patients in a state of unresponsive wakefulness) or minimally conscious state patients experience normal sleep? Up until now the distinction between the two patient…

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Added by Alireza Sibaei on August 18, 2011 at 5:21pm — No Comments

Scientist Converts Human Skin Cells Into Functional Brain Cells

A scientist at the Gladstone Institutes has discovered a novel way to convert human skin cells into brain cells, advancing medicine and human health by offering new hope for regenerative medicine and personalized drug discovery and development.

more details under: Groups: Neurology of Consciousness…

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Added by Alireza Sibaei on August 5, 2011 at 3:15pm — No Comments

FENS-IBRO-Hertie Winter School 2011/12

The Hertie Winter School entitled "Neural Coding in Sensory Systems" will be held in Obergurgl,

Austria, from January 8 - 15, 2012.
Deadline for applications is September 19, 2011, 24:00 CET.

more Information: http://www.fenswinterschool.org/

or alisibaei@facebook.com

Added by Alireza Sibaei on August 4, 2011 at 4:30pm — No Comments

Neuroscientists Uncover Neural Mechanisms of Object Recognition

ScienceDaily (July 14, 2011) — Certain brain injuries can cause people to lose the ability to visually recognize objects -- for example, confusing a harmonica for a cash register.

for more details click here: http://www.sciencedaily.com/releases/2011/07/110713131429.htm

Added by Alireza Sibaei on August 2, 2011 at 4:00pm — No Comments

Intranasal Delivery—A New Therapeutic Approach for Brain Tumors

find more: intranasal delivery.pdf

Added by Alireza Sibaei on July 31, 2011 at 1:36pm — No Comments

FEITER A NEW METHOD OF BRAIN SCANNING

Functional Electrical Impedance Tomography of Evoked Responses (fEITER) is an entirely new medical imaging technique which enables high speed imaging and monitoring of electrical activity deep within the brain. 

for more details join us: " Neurology of consciousness"

Added by Alireza Sibaei on July 28, 2011 at 5:34pm — No Comments

Caltech Researchers Create the First Artificial Neural Network Out of DNA


for more information click here: http://media.caltech.edu/press_releases/13434
or on my face book: alisibaei@facebook.com

Added by Alireza Sibaei on July 26, 2011 at 3:21pm — No Comments

Sit back and relax: Watch a 3-D film of the brain as it loses consciousness

For the first time researchers have watched the brain as it loses consciousness.

Read more: http://www.dailymail.co.uk/sciencetech/article-2003752/Watch-brain-3-D-loses-consciousness.html#ixzz1T79iC0ck

Added by Alireza Sibaei on July 25, 2011 at 7:11am — No Comments

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