5.2
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What is the black box model
Input - CNS - Output -Feedback-
Definition of information processing
System in which we take information from the surrounding environment, use it to make a decision and then produce a response
Simple model of information processing
Input- Decision making by CNS- Output
DRAW WELFORDS MODEL
What does Welford’s model suggest
We take in information via senses and temporarily store them before sorting them out. Inputs relevant to decision making stored in short term memory Decision is made by comparing info in short term memory to that in the long term memory The decision is then carried out and the results stored for future reference.
Exteroceptors
They detect information from outside the body. In sport this is information the player can see hear and touch
Interceptors
Provide information from within the body. Within sport they detect changes in CO2 level, blood pressure and movements in response to the CNS
Proprioceptors
They detect and inform CNS for body position and limb movement. They feed back to the CNS with reference to correct technique and power of movement
Explain the signal-detection process
Signal detection is how brain make sense of stimuli recieved Short term sensory stores stores large amounts of information for a very short period of time Selective attention looks out for the anticipated stimuli Selected stimuli is compared to long term memory to select right response
Features of the short term sensory store
Holds all information for 0.5 seconds with unlimited storage. Selective attention filters information here and transfers the important information to the short term memory to prevent info overload
Features of the short term memory
Information is held for 10 seconds but can only hold 10 bits of information. STM is active along as attention is being paid to the information. If its been practiced its transferred to the LTM
Features of the long term memory
Can hold an unlimited amount of information and can be stored for a lifetime. LTM retrieves memory from past actions and sends to the STM to allow movement to be carried out.
Define the term response time (equation)
Response time = Reaction time + Movement
Definition of response times (words
The reaction time of a stimuli plus the time it takes to respond and carry to carry out the movement
Definition of reaction time
The time taken to respond to a stimuli
Factors that determine reaction time
Age, Gender, Fatigue, Physical Fitness
The concept of the physical refractory period
1) Two stimuli are presented at the same time meaning the reaction time to the second stimuli is slower 2) This is because we are unable to process a second stimuli until the first stimuli information has been processed 3) This means the reaction time for the second stimuli is longer.
Intrinsic feedback
Comes from within the performer. The feel of the movement eg a performer knows if there long pass or shot was good