week 8A (no week 7 reading week)

Question 1

what used to be considered a propioceptive sens but not anymore

Answer 1

vestibualr

Question 2

kinesthesis involves ____ and proprioception is more ___

Answer 2

conscoiusness
reflexive

Question 3

what are the 4 major contibutors to kinesthesis?

Answer 3

1. sense of position and movement of the limbs
2. sense of tension or force
3. sense of effot/heaviness
4. sensation of body image + psoture (where head in space + upright_

Question 4

kinesthesis senses ___ and is ___ while propricoeption sense____ and is___

Answer 4

kinesthesis - movement and is conscou/behaviour
propriception = position and is reflexive/subconscious

Question 5

what is proprioceptve afference

Answer 5

afferent signal by mechanoreceptors produced as consequnce of postion and movement of body parts and tension in msucles and joints

Question 6

proprioceptive affernts are signals produced as. result of ___ and ___ of body parts and ___ in muscles and joints

Answer 6

postion + movement - tension in muscle and joints

Question 7

what is ex-afference?

Answer 7

proprioceptive afference from external/unexpecyed force

Question 8

what is an example of ex-affernce? What is it generated by>

Answer 8

genrated by proprioceptors -paige throw microphone at brian is his cutaneous mechano recptos sense the object hitting hiim

someone slaps me in the face

Question 9

what is re-afference? example?

Answer 9

propcieptive afference response generated by our own movements - internal
holding a laser pointer and moving it - typing on computer

Question 10

what are the two types of taks in proprioception assessment? what are each?

Answer 10

mathcing tasks and discrimination tasks

matching - comparing two limbs (simultaneous) or comparing limb to itself (successive)

deiscirimtion
- flecion vs extension - moved + how far

Question 11

what is an example of a simulatnous matching task?

Answer 11

touching fingers with eyes closed

Question 12

what is an example of a succesuve matching task?

Answer 12

Move the area then try to replicate angle after

Question 13

what is an example of a dicrimination task

Answer 13

idnetifying bend in finger. light tough vs firm grip

Question 14

name 4 sources of proprioception

Answer 14

1. muscle spindles
2. joint
3. cutaneous
4. GTO

Question 15

msucl spindle detect ___ of a muscle while GOT detect ___ of a myscle

Answer 15

legnth + velocity vs tension/force

Question 16

what 3 aspects of proprioception do joitns detect

Answer 16

pressure, force, joint position

Question 17

what do cutanoues receptors detect in proprioception

Answer 17

length/belocity of skin stretch
movemnt onset/onset

Question 18

all mechanorecptors contirbute to proptioception. True or false?

Answer 18

true

Question 19

if prximal joint is extended myscle receptors are ___

Answer 19

engaed

Question 20

if proximal joint is felxed mmuscler ecptors are __

Answer 20

disengaged

Question 21

what recpetors are activetd if middle finger extended, unanesthetized

Answer 21

cutaneosu, joint, + muscle

Question 22

what receptors i fmiddle finger is extended, anesthetized

Answer 22

only muscle

Question 23

what receptors are in mdidle finger extended - joint anesthetized

Answer 23

cuteanous + muscle

Question 24

what receptors in middle finger if finger flexed - unasthetized

Answer 24

cutaneous + joint

Question 25

Middle finger flexed, joint anesthetized

Answer 25

only cutanous

Question 26

when are only cutaneous recptors activated in the finger

Answer 26

joint is anasthetized + flexed

Question 27

whn are both cutanous and joint receptors activated in the finger

Answer 27

joint is flexed - unastehertized

Question 28

when are cutaneous + muscle reeceptors activated

Answer 28

joint extended - joint anesthetized

Question 29

when are all receptors engaged

Answer 29

joint extended - unasthetized

Question 30

when are onyl muscle receptors engaed

Answer 30

Middle finger extended, anesthetized:

Question 31

tendon ___ in msucle spindles activates ___

Answer 31

tendon vibraitoin activates type IA afferents

Question 32

tendon vibration = ____ illusion example?

Answer 32

kinethetis pinnovhio effect

Question 33

What is the Pinocchio effect, what is it an example of, and what receptor does it involve

Answer 33

example of kinestheic illusion form tendon vibration - msucle spindles perspon toeuches nose (cutaneous sensation) while bicep is vibrated (arm exetension sensation) - gives illusion taht nose is growing

Question 34

what is sensory dominance

Answer 34

Conflict arises and the brain chooses one sensation over other sensory information

Question 35

what is improtant for kinethetic illusion to work?

Answer 35

person cannot see the limb

Question 36

give an example of sensory visual dominance

Answer 36

vibrate Achilles tendon in participant brace against wall - feel triceps surae lengthening - falling forward

Question 37

true or false - after joint replacement - ther is a decrase in joint position sense

Answer 37

false

Question 38

what effect does lignocain have on joint receptors ?

Answer 38

DECREASES sesnitivty +proprioception

Question 39

what effect oees dextran have on joint receptor sensitivity

Answer 39

incrase sensitivity + proprioception score

Question 40

what 2 chemicals showed that joint receptors have arole in proprioception

Answer 40

lignocaine dextran

Question 41

what affernet innervate ruffini receptors

Answer 41

SAIII (slowly adaptin type II) - dtect skin stretch

Question 42

what detexts skin stervch

Answer 42

ruffini corpuscle receptors - slowdly adapting type II fast adapting type I (FA1) - detect intiral repuchang in stretch lcoally

Question 43

what afferents code for finger psotion?

Answer 43

SAII (rufffini)

Question 44

fingeer flexion ____ discharge rates of ____ affernts

Answer 44

incrases discharge rate sof SAIII afferents

Question 45

Finger extension ___ discharge of SAII afferents

Answer 45

decrease discharge rates

Question 46

____ code for dinfe rposition wile ___ code for which joint is moving

Answer 46

SAII vs FAI

Question 47

what do FA1 afferents innervate?

Answer 47

meissner corpuscles

Question 48

do all propricoeptora have limtaitons?

Answer 48

yes

Question 49

signals are ____ fomr how many proprioceptors?

Answer 49

ambiguosu from one propricoeptors

Question 50

can motor command generate kinestehtic percdption in abscence of proprioception

Answer 50

likely not but maybe - when aske dto flec/extend oculd eprcive flecion/extension without viision of hand