Home After a Stroke: Brain Plasticity Will Blow Your Mind

“New technology confirms that nerve cells can sprout new branches.  For example, Marshall describes cortical regeneration associated with finger-thumb opposition. … New growth is called a neurite until it differentiates into an axon or a dentrite.  Researchers are still learning which chemicals support or hinder the neurogenesis seen in the video.  However, only repeated training makes new dentrites cluster together so they work efficiently as a group.  I haven’t seen research that says how much repetition is needed to produce neuroplasticity.  I’m pretty sure that a few minutes of exercise followed by hours of disuse isn’t enough.”

via Home After a Stroke: Brain Plasticity Will Blow Your Mind.

Fitness Myths That Hold You Back, and How to Succeed

Anat Baniel: The Fitness Myths That Hold You Back, and How to Succeed: Myth 1.

While not the entire point of the article, those of us who develop skills and perform them apparently without thinking about them sometimes talk and think that the muscles themselves have some special power to perform tasks by themselves. “Muscle Memory” is a convenient way of describing the feeling, but far off the mark of what’s really going on:

Muscles Do Not Have a Mind of Their Own

There is no question that to be able to move, we need our muscles, and that stronger muscles provide us with the possibility for stronger, more powerful movement and stamina, making us more fit. However, muscles do not know what to do on their own. It is the brain that “tells” the muscles what to do — when to contract and when to let go — through the signals it sends to the muscles.

And in order for the brain to know what signals to send to our muscles, it has to first “know” that the muscles are there to be used and learn how to coordinate the different muscle groups successfully. Perhaps you’ve had the experience of trying to tone and strengthen certain muscles in your body and no matter how hard you exercised, it didn’t work. This is because your brain never connected fully enough to these muscles. The brain needs a rich variety of experiences from which it creates the necessary connections and patterns of our movements, also known as “mapping” in the brain.

Read the entire article at:

Anat Baniel: The Fitness Myths That Hold You Back, and How to Succeed: Myth 1.