The Limbic System and Acupuncture

fMRI of Limbic System sections, courtesy of the NIH

Previously we published an article on the Limbic System, describing its function and positing acupuncture’s effects on it. This month, we found a study that supports this idea: Effects of Electroacupuncture versus Manual Acupuncture on the Human Brain as Measured by fMRI, published in the academic journal Human Brain Mapping in 2005.

This study was funded by the NIH and conducted by Harvard University at Massachusetts General Hospital. Researchers used fMRI’s on 13 healthy participants. Brain activity was measured at just one acupuncture point, ST 36, using four mechanisms:
1. manual acupuncture
2. electrical stimulation at 2 Hz
3. electrical stimulation at 100 Hz
4. placebo acupuncture creating a tactile sensation as a control

Please note: electrical stimulation utilizes a machine that attaches to the needles to amplify their effect. ST 36 is a major, commonly-used point for its many functions supporting overall health. For those of you who receive acupuncture treatment, it is located below the knee, on the outer side of the leg.

While the researchers found that electrical stimulation increased desirable effects in specific regions of the brain, overall their study supported the “…hypothesis that the limbic system is central to acupuncture effect regardless of specific acupuncture modality.”

To read this study is humbling, for it requires advanced knowledge of the brain’s anatomy and physiology. In a nutshell, it found the first three mechanisms listed above had a regulating effect on the limbic system, while the placebo of tactile control had little or no change. That is, where it is beneficial for activity to increase (a biological call to action) or to decrease (a biological call to calm), real acupuncture, with the help of the electrical stimulation machine or alone, affected this part of the nervous system in the manner intended.

http://mountaintopacupuncture.com/the-limbic-system-and-acupuncture

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At Mountaintop Acupuncture, we have over 30 years experience. To read more, please click here.

If you have questions and concerns about acupuncture treatment, we offer a free 20-minute phone session: click here for contact information to call or e-mail us. We practice at The Highlands Ranch Medical Pavilion in Littleton, Colorado.

Insurance is welcome and accepted.

The Limbic System: Emotions, Learning, & Memory

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Neural Connections Grow and Change

While we experience emotions and memories as ephemeral and therefore not concrete, the fact is they are processed in a distinct region of the brain named the Limbic System, and they are made up of molecules that interact with nerves.

The Limbic System (LS) is a network of neurons that links the hypothalamus and pituitary gland to the cerebrum. The LS has a direct effect on the Nervous and Endocrine Systems.

Memory and memorization is reinforced through repetition, which strengthens the connections into neural pathways. Emotions and sensory components (sight, sound, touch, taste, and smell) enhance memory; the input of more than one sensory component and/or the stronger the emotion experienced, the greater our ability with be to recall that memory.

The LS could be called the conscience, because it processes the emotional aspects of behavior. In a perfect world, behavior and emotions that accompany it are rational and are in sync with each other, for example, eating when hungry, working for money, and resting in the evening.

When symptoms arise that elude diagnostic testing and are classified “psychosomatic,” medical science has suggested these disorders may originate in the Limbic System. Because the LS influences the nervous and endocrine systems, emotions of stress (fear, anxiety, anger) could affect the delicate balance in those systems and manifest as an identifiable symptom.

On a purely physical level, when we learn and practice a new task, these new neural connections become permanently part of us. First they are stored in the motor cortex region of the brain (receives and sends signals pertaining to voluntary movement), later they dropped down to the basal nuclei (deeper in the brain), and eventually they are stored in the spinal cord once the task no longer requires conscious effort. Neural memory exists in physical space and can be built upon.

This explains how, after a lapse of many years, a skill can be re-learned quickly, based on that stored knowledge. For example, if you took ballet or piano lessons in grade school and decided twenty years later to take classes, the stored memory would help you come up to speed more quickly than if you had to learn from scratch.

Similarly, emotional memory is thought to first to be stored first in a specific area of the LS, the amygdala, and then moved to the pre-frontal cortex. These neural connections have nutrient substances that make them up – proteins and minerals. They exist in physical space as distinct components, like physical memory, perhaps as malleable, to be built upon and changed.

http://mountaintopacupuncture.com/the-limbic-system-emotions-learning-memory

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At Mountaintop Acupuncture, we have over 30 years experience. To read more, please click here.

If you have questions and concerns about acupuncture treatment, we offer a free 20-minute phone session: click here for contact information to call or e-mail us. We practice at The Highlands Ranch Medical Pavilion in Littleton, Colorado.

Insurance is welcome and accepted.