KIN 230 Lecture Notes - Lecture 1: Fairy, Cerebellum
Document Summary
People thought this was evidence for the response-chaining hypothesis because eliminating feedback seemed to eliminate the movement altogether: challenge to study: monkeys were choosing not the use. Response chaining hypothesis the forelimb, not that they couldn"t. These circuits are called central pattern generators: in mesencephalic (midbrain) preparation the spinal cord is cut in the level of the midbrain, which toally severs the lower levels of the cord from the higher, supraspinal center. Cerebellum left intact: cat was able to form stepping movements similar to locomotion initially with a chemical/electrical stimulus. This gives evidence that the midbrain is not the only way to initiate the spinal generators for stepping. Reflex involvement in locomotion: maintaining the original pattern: reflexes ensure that the pattern of activities specified by the cpg is carried out effectively in the fae of unexpected changes in the environment, reflex-reversal phenomena - important!
