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Flashcards in information processing Deck (33):
1

Ecological IP theory

how motor programming interacts with the environment to perform a goal oriented behavior
-organization of the motor output is specific to the task

2

Cognitive IP theory

Humans interact with the environment as processors of information
-storage,coding,retrieval,transformation of info
-motor behavior & output

3

Basic Assumptions of IP

processes via a series of systems:
-attention
-STM
-perception

4

Does IP in humans resemble computers?

Central processor of limited capacity
combine info presented with stored info
humans can process more than 1 thing at a time (parallel processing)

5

Serial Processing

-single channel models
-one thing being processed at a time
-controlled IP

6

Parallel Processing

-multiple channel pathways
-processing more than 1 thing at a time
-automatic IP

7

Three stages of IP

Stimulus Identification
Response selection
Response Processing

8

Stimulus Identification

-detection of sensory stimuli & neural encoding of info

9

2 substages of stimulus Identification

-stimulus detection
-pattern recognition

10

pattern recognition

-decipher patterns of stimuli both static & dynamic
static=recognizing familiar face (object not moving)
dynamic=car driving towards you (object constantly changing)

11

stimulus detection

-stimulus from env processed @ diff levels until memory is contacted

12

Response Selection

Selection of which motor response to execute

13

Hick's Law

inc # of stimulus response=inc time
-more choices you have the longer it takes to chose one

14

Fitt's Law

the more complex the response, the longer the section time
-more info there is to process, longer it takes to select a response

15

What affects response selection?

-performance
-practice
-3 of stimulus responses available
-stimulus response compatibility (stronger w/ learned associations)

16

Response Processing

organization and initiation of motor process

17

Henry-Rogers experiments

-inc complexity of a response that needs programing=inc RT
-more time to process movements, increase accuracy demand, and longer movement durations

18

factors affecting response programming

1.# of movements (that need to be programmed)
2. movement duration
3. Movement accuracy

19

Anticipation

ability to predict occurrence of external stimuli & select appropriate response to it

20

3 types of anticipation

1. perceptual: predictability from previous knowledge & experience
2. effector: how long is it going to take something to move
3. receptor: (mechanoréçtors) detection of sensations

21

Spatial (event) Anticipation

aware of the type of stimulus that could be present and what subsequent responses would be required
-advanced info allows for response programming before stimulus has arrived-->decreased RT

22

Temporal Anticipation

anticipation of when stimulus will arrive can lead to large decrease in RT

23

Foreperiods

period of time prior to stimulus onset
-constant vs variable=variable in RT
constant & short foreperiods=shortest reaction times

24

Cost Benefit analysis of anticipation

-respond quickly if anticipate correctly
-anticipate incorrectly->costs time b/c have to undo and replay appropriate motor plan, inc run time
-situation/task dependent

25

Automatic processing

neuronal activation in response to stimuli
parallel in nature
greater capacity/fast acting

26

Controlled Processing

requires selective attention
serial in nature
slow process

27

Other things impacting IP

-Attention
-Arousal
-Anxiety

28

Anxiety

distress about future events and uncertainties
-anxiety inc arousal levels

29

Arousal

can have increased arousal w/out inc in anxiety
too-high-->goof for gross motor
too-low--> good for fine motor

30

Inverted U Principle

there is an optimal level of arousal for each task

31

IP under High arousal

perceptual narrowing
hypervigalence

32

Perceptual narrowing

"tunnel vision"
-increased focus on stimuli related to the task at hand vs irrelevant stimuli
-dec ability to perceive other stimuli that may be important for the task later on

33

Hypervigalance/Panic

severe stress which leads to severely disrupted actions
-freezing