Procedural Memory

Perceptual Motor Skills

-Learned movement patterns -Pursuit rotor task -serial reaction time task

Cognitive Skills

-Learned pattern analysis -Mirror reading task -Artificial grammar learning task -Probabilistic classification task

Procedural Memory

-Memory for how/knowing how to do something

Procedural Memory is Intact in Amnesia

-Procedural memory task: Amnesiacs were good at pressing cues as quickly as possible in a certain order -but they were bad at the declarative memory task where they had to predict which cue was next

The Striatum

-Procedural memory: Weather prediction task 1. Control subjects 2. Amnesiacs (disfunction of the hippocampus) 3. Parkinsons (disfunction of the striatum) -The parkinsons patients did really bad because they have disfunction in their striatum, and that messes with procedural memory -But then when asked multiple choice questions about the layout of the screen, the amnesiacs did really bad because they have impaired declarative memory -So double dissociation

Win Shift Task

-Rats in a radial maze -Rats confined to center platform for 10 seconds -All 8 doors opened ad rats were allowed to choose an arm and go down it to get a reward and then had to return to center platform before picking another arm -Were only allowed to make 8 choices, so if they made a mistake they got less rewards -Phase 1: 1. Control 2. Sham lesion 3. Hippocampus lesion -Results the control and sham group had way less errors than the hippocampus lesion group. The lesion group did worse because the lesion on their hippocampus impaired their declarative memory Phase 2: 1. control 2. Sham lesion 3. Dorsal striatum lesion -Results: the rats withe the dorsal striatum lesion had about the same number of errors as the other two groups -THIS MEANS YOU NEED THEN HIPPOCAMPUS FOR THIS TASK AND NOT THE DORSAL STRIATUM!!!

Win Stay Task

-Rats in radial maze -Rats put in center platform with four of the arms lit -If rat retrieves food from lit arm, it was rebated once -When the second reward was obtained by the rat, the light turned off, and there was no longer any food left at the end of the arm -Phase 1: 1. control 2. Sham 3. hippocampus lesion -Results: rats with the sham lesion actually did better than the control and sham because the is a procedural memory task -Phase 2: 1. Control 2. Sham 3. Striatum lesion -Results: Rats with the striatum lesion did significantly worse than the control and the sham group because this is a procedural memory task and you need the dorsal striatum to do procedural memory tasks