PMID-10607637[0] Internal models for motor control and trajectory planning
- in this review, I will discuss evidence supporting the existence of internal models.
- fast coordinated arm movement canot be executed under feedback control, as biological feedback loops are slow and have low gains. hence, the brain mostly needs to control things in a pure feedforward manner.
- visual feedback delay is about 150-200ms.
- fast spinal reflexes still require 30-50ms; large compared to fast movements (150ms).
- muscle intrinsic mechanical properties produce proportional (stiffness) and derivative (viscosity) gains without delay.
- inverse models are required for fast robotics, too. http://www.erato.atr.co.jp/DB/
- talk about switching external force field to gauge the nature of the internal model - these types of experiments verily prove that feedforward / model-based control is happening. has anyone shown what happens neuronally during the course of this learning? I guess it might be in my datar.
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