Recruitment in retractor bulbi muscle during eyeblink conditioning: EMG analysis and common-drive model.

ABSTRACT: To analyze properly the role of the cerebellum in classical conditioning of the eyeblink and nictitating membrane (NM) response, the control of conditioned response dynamics must be better understood. Previous studies have suggested that the control signal is linearly related to the CR as a result of recruitment within the accessory abducens motoneuron pool, which acts to linearize retractor bulbi muscle and NM response mechanics. Here we investigate possible recruitment mechanisms. Data came from simultaneous recordings of NM position and multiunit electromyographic (EMG) activity from the retractor bulbi muscle of rabbits during eyeblink conditioning, in which tone and periocular shock act as conditional and unconditional stimuli, respectively. Action potentials (spikes) were extracted a

SUBMITTER: Lepora NF 

PROVIDER: S-EPMC2775390 | biostudies-literature | 2009 Oct

REPOSITORIES: biostudies-literature