A great post by Todd Hargrove on a talk by Lorimer Moseley he recently went to in Portland.
http://www.bettermovement.org/2012/review-of-conference-with-moseley-and-hodges-on-pain-and-motor-control/
A short excerpt...
Before the brain creates pain on the basis of nociception, it will essentially ask a key question: how dangerous is this really? To answer that question, it will consider many different kinds of inputs, which can be divided into four basic categories:
1. proprioception (information from joints, muscles, tendons and skin about the positions and movements of the body parts)
2. interoception (information from nociceptors about the thermal, mechanical and chemical condition of the tissues)
3. exteroception (the five senses)
4. cognition (knowledge, memory, feelings, perceptions, belief, logic, attention, expectation, etc.)
If the brain processes the different inputs and concludes that some form of protective action is necessary, it can choose between several different kinds of protective outputs, such as pain, immune responses (e.g inflammation) or protective movements such as flinching, limping, muscle guarding, stiffness and other motor control changes. (Now which kind of protective output would you rather have, movement or pain?)
One important point to consider is that any output will almost immediately become a new input into the system. For example, a protective movement will modify the proprioceptive and exteroceptive inputs to the brain. Pain will create new thoughts, feelings and knowledge about dangers to the body. Inflammation will sensitize nociceptors. And so new outputs are created which then immediately become inputs again.
The point is that this is an incredibly complex and dynamic system that loops back on itself every second in an unpredictable and inherently personal and individualized manner.
http://www.bettermovement.org/2012/review-of-conference-with-moseley-and-hodges-on-pain-and-motor-control/
A short excerpt...
Before the brain creates pain on the basis of nociception, it will essentially ask a key question: how dangerous is this really? To answer that question, it will consider many different kinds of inputs, which can be divided into four basic categories:
1. proprioception (information from joints, muscles, tendons and skin about the positions and movements of the body parts)
2. interoception (information from nociceptors about the thermal, mechanical and chemical condition of the tissues)
3. exteroception (the five senses)
4. cognition (knowledge, memory, feelings, perceptions, belief, logic, attention, expectation, etc.)
If the brain processes the different inputs and concludes that some form of protective action is necessary, it can choose between several different kinds of protective outputs, such as pain, immune responses (e.g inflammation) or protective movements such as flinching, limping, muscle guarding, stiffness and other motor control changes. (Now which kind of protective output would you rather have, movement or pain?)
One important point to consider is that any output will almost immediately become a new input into the system. For example, a protective movement will modify the proprioceptive and exteroceptive inputs to the brain. Pain will create new thoughts, feelings and knowledge about dangers to the body. Inflammation will sensitize nociceptors. And so new outputs are created which then immediately become inputs again.
The point is that this is an incredibly complex and dynamic system that loops back on itself every second in an unpredictable and inherently personal and individualized manner.
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