Category Archives: Nervous System

How the Brain Creates the ‘Buzz’ That Helps Ideas Spread

An interesting and must read article for professionals related to Health/Medicine.

After Big Bang

How do ideas spread? What messages will go viral on social media, and can this be predicted?

UCLA psychologists have taken a significant step toward answering these questions, identifying for the first time the brain regions associated with the successful spread of ideas, often called “buzz.”

The research has a broad range of implications, the study authors say, and could lead to more effective public health campaigns, more persuasive advertisements and better ways for teachers to communicate with students.

“Our study suggests that people are regularly attuned to how the things they’re seeing will be useful and interesting, not just to themselves but to other people,” said the study’s senior author, Matthew Lieberman, a UCLA professor of psychology and of psychiatry and biobehavioral sciences and author of the forthcoming book “Social: Why Our Brains Are Wired to Connect.” “We always seem to be on the lookout for who else will…

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Nerve Impulse Passing through a Neuron

Nerve Impulse Passing through a Neuron

Interesting Facts about Neurons

Do you know the total number of neurons in the human #brain is nearly equal to the total number of stars in the Milky Way? And, the average number of neurons in the human brain is around 100 Billion!!!

Another interesting fact is that the longest neuron in the body extends from the base of our spine to the big toe; it is over a meter long (around 3 feet)!

So, have you ever imagined or thought how this amazing component of our nervous system function. Read on to unlock the mysterious functions of neurons.

Acoustic Neuroma Explained – Symptoms, Treatments and Surgery

See on Scoop.itDiseases and Disorders

Acoustic neuroma, an unusual cause of hearing loss, usually a noncancerous (benign) but gradual growth of tumor that develops on the main nerve landing ….

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Whole brain cellular-level activity mapping in one second

See on Scoop.itAnatomy

Neuroscientists at Howard Hughes Medical Institute have mapped the activity of nearly all the neurons in a vertebrate brain at cellular resolution, with signficant implications for neuroscience research and projects like the proposed Brain Activity Map (BAM).

Fast volumetric imaging of the larval zebrafish brain with light-sheet microscopy (credit: Misha B Ahrens, Philipp J Keller/Nature Methods)

The researchers used high-speed light sheet microscopy to image the activity of 80% of the neurons in the brain (which is composed of ~100,000 neurons) of a fish larva at 0.8 Hz (an image every 1.3 seconds), with single-cell resolution.

This represents the first technology that achieves whole brain imaging of a vertebrate brain at cellular resolution with speeds that approximate neural activity patterns and behavior, as Nature Methodsmethagora blog noted.

The authors saw correlated activity patterns at the cellular level that spanned large areas of the brain — pointing to the existence of broadly distributed functional circuits.

The next steps will be to determine the causal role that these circuits play in behavior — something that will require improvements in the methods for 3D optogenetics, the blog said. Obtaining the detailed anatomical map of these circuits will also be key to understand the brain’s organization at its deepest level.

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What is a Neuron?

Chemical synapse schema

Image via Wikipedia

What is Neuron?

Neuron is the structural and functional unit of our nervous system. More frankly, neurons are the cells by which the whole human body communicate with the brain and outside world. As like radio transmission, neurons send and receive signals from and to the brain. Within fraction of seconds they can receive, process and transmit an information.

Want to learn more? Read the following articles:

The Life and Death of a Neuron: National Institute of Neurological Disorders and Stroke (NINDS)

The Life and Death of a Neuron: National Institute of Neurological Disorders and Stroke (NINDS).

Enteric Nervous System

Knowledge Guild

The enteric nervous system is a subdivision of the autonomic nervous system that directly controls the gastrointestinal system in vertebrates.

The nervous system exerts a profound influence on all digestive processes, namely motility, ion transport associated with secretion and absorption, and gastrointestinal blood flow. Some of this control emanates from connections between the digestive system and central nervous system, but just as importantly, the digestive system is endowed with its own, local nervous system referred to as the enteric or intrinsic nervous system.

The magnitude and complexity of the enteric nervous system is immense – it contains as many neurons as the spinal cord. The enteric nervous system, along with the sympathetic and parasympathetic nervous systems, constitute the autonomic nervous system.

The principal components of the enteric nervous system are two networks or plexuses of neurons, both of which are embedded in the wall of the digestive tract and extend…

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