Neuroscience In The News On March 21

These are articles that I found of interest relating to news about Neuroscience.  In this issue, I have highlighted articles about the violent behavior in the brain, theta rhythm and neural activity, and neuroscientists studying how our brain controls our hands .

Please check out the article links below and feel free to comment with other information related to these subjects.  I enjoy learning as much as I can about the brain and passing this information on to everyone else that shares these passions.

This is for the week beginning March 21, 2016.

Please come back each week and hopefully I will have some more highlights.  Feel free to share with me ones that you have found and I may highlight those as well.

Feel free to check out the highlighted articles from March 14, 2016

Violent Behavior In The Brain

The warning signs of premeditated violence turn up in the hypothalamus, a part of the brain that also regulates temperature, hunger and sleep. Specifically, the ventrolateral part of the ventromedial hypothalamus, or VMHvl, is the area responsible for our ill will.

The latest study continues a thread of research probing the neurological roots of aggression. Last month, the same scientists identified what they described as the origin of rage in the male animal brain. Damage to the lateral septum, a part of the brain linked to control of anxiety and fear, triggers a domino effect in the brain that leads to "septal rage," or outbursts of unprovoked violence.

Article Link:

• Scientists Identify The Roots Of Violent Behavior In The Brain
• Reported in Mashable 03/09/16
• Dayu Lin, Neuroscience Institute at NYU Langone.

Theta Rhythm And Neural Activity

For the brain to function correctly, the activities of multiple regions must be coordinated. This coordination is thought to be carried out by waves of electrical activity in the brain. One of the most prominent signals within these waves is called the theta rhythm.

The theta rhythm is thought to help coordinate neural activity between the regions of the brain that are involved in learning and memory. However, theta rhythms also appear when subjects encounter emotional stimuli, which suggests that they might have a role in social cognition.

Article Link:

• Different types of theta rhythmicity are induced by social and fearful stimuli in a network associated with social memory
• Alex Tendler, Shlomo Wagner - University of Haifa, Israel

How Brains Control Our Hands

Diedrichsen needs as much imaging technology as he can get, given the magnitude of the mystery around what he’s studying. For example, his research has found that electrical stimulation to the brain can help motor training—in a double-blinded study published in 2014, subjects who were zapped with weak currents performed 20 percent better than those who were not, and the effect lasted for a month—but the reasons why still aren’t clear.

Scientists have already built bionic limbs that patients can control with their minds. But they still aren’t very good. “Our body is a complete engineering nightmare. Our muscles fatigue. Our tendons are sloppy and hard to control. We have good sensors in our fingertips, but they’re not reliable,” Diedrichsen said. “The brain makes really amazing things out of a quite poorly engineered physical plan.” 

Article Link:

• The Neuroscientist Studying How Our Brains Control Our Hands
• Ohio State
• Jörn Diedrichsen at Western University, London, Ontario

Traumatized by Cold Hands

I'm once again reminded of one of the reasons I no longer live in the northern half of the country.  It is too cold.  Well, it isn't so much the cold because I can take a little of it.  It is the cold hands.

Every since I can remember, my hands got cold.  It didn't matter if I had layers of clothes on and warm gloves, my hands were cold.  It didn't matter if I had the warmest mittens on, they got cold.  It could be 70 degrees in a room and my hands would be cold.

As far back as I can remember, I would get kicked, hit, and ridiculed, because my hands would get cold.  I couldn't help it.  They just did. 

Time and time again, I was told to shut up and grow up.  I was told not to cry.  Big boys don't cry is what I was told. I was so traumatized by it, that it still haunts me today. 

You would have thought allowing me to have 5 minutes to go inside and warm up would not have been asking for too much.  Apparently, it was.

Imagine your hands hurting from being cold or being so stiff they didn't want to move.  Imagine someone telling you that you were a cry baby or just complaining and whining.  Imagine being threatened with physical punishment and seeing that threat followed through.

Being traumatized by cold hands is not fun.  I do not enjoy the colder weather at all and for those that do, more power to you.  However, I didn't like to be made fun of and bullied by my father because my hands were naturally cold.

For me, I prefer the warmer weather.  Cold weather isn't my desire anymore and most of the time, it makes me want to hide and withdraw.  Most don't fully understand this, but it can be a very traumatizing moment for me.

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Blog Post And Images (c) 1/13/16 by Don Shetterly

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