Memory & Motor Performance

MemoryMemory

Ability to store and recall informationAbility to store and recall information

Memory SystemsMemory Systems

Composed of 3 systemsComposed of 3 systems Defined by storage and processing Defined by storage and processing

characteristicscharacteristics

Memory SystemsMemory Systems

Sensory RegisterSensory Register

• large capacitylarge capacity• momentarymomentary (250 ms)(250 ms)

(prior to conscious awareness)(prior to conscious awareness)

Memory SystemsMemory Systems

Sensory Sensory RegisterRegister

Short-Term Short-Term MemoryMemory

• limited capacitylimited capacity• temporarytemporary

• working memoryworking memory

Selective Selective attentionattention

Time?Time?Duration?Duration?

Memory SystemsMemory Systems

Sensory Sensory RegisterRegister

Long-Term Long-Term MemoryMemory

• limitless capacity limitless capacity & duration& duration

Short-Short-Term Term MemoryMemory

RehearsalRehearsal

working working memorymemory

Type of knowledge?Type of knowledge?

Memory Systems & PlanningMemory Systems & Planning

Sensory Sensory RegisterRegister

Long-Term Long-Term MemoryMemory

• limitless capacity limitless capacity & duration& duration• past experiencespast experiences

Short-Short-Term Term MemoryMemory

RehearsalRehearsal

RetrievalRetrieval

working working memorymemory

ForgettingForgetting

Decay over timeDecay over time InterferenceInterference Retrieval CuesRetrieval Cues

Muscle Memory: Truth or Myth?Muscle Memory: Truth or Myth?

Motor MemoryMotor Memory• Movements learned and stored in brainMovements learned and stored in brain• Practice and feedback help revise motor plan for Practice and feedback help revise motor plan for

later retrievallater retrieval Muscle MemoryMuscle Memory

• Substantial muscle mass lost due to disuseSubstantial muscle mass lost due to disuse• Regains mass in shorter period time than initially Regains mass in shorter period time than initially

developeddeveloped• Nuclei retained even if proteins gone - new proteins Nuclei retained even if proteins gone - new proteins

synthesized at accelerated rate with exercise/nutrientssynthesized at accelerated rate with exercise/nutrients

Minimizing ForgettingMinimizing Forgetting

Strategies?Strategies?• Teaching to tape an ankleTeaching to tape an ankle• Teaching 8-step dance routineTeaching 8-step dance routine• Teaching 8-sequence moving offenseTeaching 8-sequence moving offense• Teaching wheelchair basketball pickupTeaching wheelchair basketball pickup• Teaching a specific martial arts/tai chi positionTeaching a specific martial arts/tai chi position• Teaching free throwTeaching free throw