Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

LI Control of Human Movement > Week 1 > Flashcards

Week 1 Flashcards

1
Q

Speed…

What does Fitt’s law state?

A

The speed that you can point or reach for an item depends on distance and size

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Spontaneous

What is the law of Inertia?

A

Objects don’t just spontaneously speed up, slow down or change direction

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Ex, Co

What is the Primary Motor Cortex used for?

A

Execution and Control of movements

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Plan

What does the PPC do?

A

Plans movement

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Lateral Intraparietal area

What does the LIP area do?

A

Provides saccadic eye movements

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Parietal Reach Region

What does the PRR do?

A

For Reaching movements

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Anterior Intraparietal area?

What is the AIP for?

A

For grasping movements

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Set

What is a coordinate system?

Also called coordinate frame

A

Set of numbers that uniquely determine a point in space

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Ego…

What is an egocentric coordinate system?

A

Coordinate system attached to our body

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Outer

What is an allocentric coordinate system?

A

Coordinate system attached to the external world (or an object)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Know

What are forward kinematics?

A

Calculates hand of the robot if you know how each joint is bent or rotated

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

How

What are Inverse kinematics?

A

Calculates how the robot should bend or rotate it’s joints to make the hand reach a destination

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

FK Destination, IK Joints

What is the difference between Inverse Kinematics and Forward kinematics?

A

FK tells you where the hand will end up, IK tells you how to move the joints to get there

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

More than 1

What is redundancy?

A

When the robot has multiple ways to move its joints to reach the same position

Can be used to avoid obstacles or optimize movements

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

F = MA

What is the equation in newtons second law?

A

Force = Inertia x Acceleration

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Why

What is dynamics?

A

Explains why objects move the way they do using forces and masses

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

How

What are kinematics?

A

Describes how objects move, how position, velocity and acceleration can chaange over time

18
Q

A = Caused by F, acting on M. D uses F to E kinematics

What is the relationship between kinematics and dynamics?

A

Acceleration of an object is caused by a force acting on an objects mass. Dynamics uses forces to explain kinematics of an object

19
Q

Curved path

What is the two thirds power law?

A

When moving along a curved path the speed tends to decrease as the curve gets tighter

20
Q

Rep

What is localisation?

A

Representation of the location of the object

21
Q

What is planning?

A

Plan of reaching the destination based on the representation

22
Q

Sp Lo, Vi, Au

What is the extrinsic information in terms of a target/destination?

A

Spatial Location, Visual Info, Auditory Info

23
Q

K and KI

What is the intrinsic info in terms of target and destination?

A

Kinematic and kinetic info of the body

24
Q

L and V

What does the Muscle spindle do when providing intrinsic information?

A

Helps to provide the length and velocity of each muscle

25
Q

F

What do the golgi tendon organs do in terms of intrinsic information?

A

Helps to calculate the force that needs to be produced by each muscle

26
Q

Fe (Skin)

What do the mechanoreceptors do when providing intrinsic information?

A

Provides the force exerted/ received on the skin

27
Q

Are spinal reflexes voluntary or involuntary?

A

Mostly involuntary

Sensory inputs cause motor outputs without intervention of higher brain centres

28
Q

Higher levels of CC

What do voluntary movements require?

A

Higher levels of Cortical Control

29
Q

General - Specific - Muscle

What do higher level control centers do?

A

Creates a general plan, transformed into a tool specific plan, transferred into individual muscle contractions

30
Q

V and A

What exoreceptive info is used in extrinsic coordinate systems?

A

Visual and Auditory

31
Q

All/Eg

What type of coordinates are used in extrinsic coordinate systems?

A

Allocentric or Egocentric

32
Q

Pri

What type of information is used in intrinsic coordinate systems?

A

Prioreceptive

33
Q

Joi An

What coordinates are used in intrinsic coordinate systems?

A

Joint angle coordinates

34
Q

Motor commands, behaviour

What is the inverse model?

A

It determines motor commands that will eventually produce a behavioural goal

35
Q

Est and Lo

What is input variability?

A

The estimation and location of the target

Uses sensory noises

36
Q

Stim int, predicts

What does the forward model do?

A

Stimulates interaction of the motor system and can predict behaviours

Uses a copy of motor commands that have been sent to the muscles via an efference copy

37
Q

Mo N and M

What is output variability?

A

Caused by motor neurons and msucles, Increases excitability and more motor neurons (signal dependent noise)

38
Q

Adv

What is a feedforward controller?

A

Planning in advance

39
Q

Policies

What is a feedback controller?

A

You have policies (follows specific rules or guidelines to maintain balance in the body)

Policies dictate how the body should respond to changes

40
Q

Pause

What is intermittency?

A

A pause until sensory feedback arrives and then resumes

Usually occurs in saccades, manual tracking and balancing

41
Q

Pre, FM, OM

What strategies compesnate sensorimotor delays?

A

Prediction, Forward model, Observer model

42
Q

Mix

What is the observer model?

A

How to mix what was predicted and what was sensed

LI Control of Human Movement (9 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions