Difference between revisions of "Sensory and motor representations"

From A conversation about the brain
Jump to: navigation, search
Line 1: Line 1:
[[File:viewgraph.png]] There is a pervasive assumption in neuroscience that `sensory' representations are built up and then `sensori-motor transformations' allow these to be used by the motor system. These transformations are supposed to be 3D rotations and translations of coordinate frames. Nothing of that kind is proposed here. Instead, the motor system provides a method of moving across a sensory+motivational manifold. It is sometimes said that the sensory system is only there to let the motor system know that it has achieved its goal. One coudl equally say that the motor system is only there to change the sensory state. There is no reason to be competitive about it, these statements are two sides of the same coin. The important thing is that we need only posit one representation and a method of moving within it.
+
[[File:viewgraph.png|thumb|Placegraph and viewgraph from Gillner and Mallot (1998)]] There is a pervasive assumption in neuroscience that `sensory' representations are built up and then `sensori-motor transformations' allow these to be used by the motor system. These transformations are supposed to be 3D rotations and translations of coordinate frames. Nothing of that kind is proposed here. Instead, the motor system provides a method of moving across a sensory+motivational manifold. It is sometimes said that the sensory system is only there to let the motor system know that it has achieved its goal. One coudl equally say that the motor system is only there to change the sensory state. There is no reason to be competitive about it, these statements are two sides of the same coin. The important thing is that we need only posit one representation and a method of moving within it.

Revision as of 09:54, 11 June 2014

Placegraph and viewgraph from Gillner and Mallot (1998)
There is a pervasive assumption in neuroscience that `sensory' representations are built up and then `sensori-motor transformations' allow these to be used by the motor system. These transformations are supposed to be 3D rotations and translations of coordinate frames. Nothing of that kind is proposed here. Instead, the motor system provides a method of moving across a sensory+motivational manifold. It is sometimes said that the sensory system is only there to let the motor system know that it has achieved its goal. One coudl equally say that the motor system is only there to change the sensory state. There is no reason to be competitive about it, these statements are two sides of the same coin. The important thing is that we need only posit one representation and a method of moving within it.