Lecture 17: emotion Flashcards
How many older adults who have previously fallen have a fear of falling (again)?
50%
How many older adults who have not previously fallen have a fear of falling?
30%
barring old age, which populations have high fears of falling?
patients with:
* parkinsons
* stroke
* vestibular loss
what do the statistics about the prevalence of fear of falling tell us?
old and sick people have a higher fear of falling (DUHHHHH)
How does fear of falling affect quality of life?
- less balance confidence
- restricted activity
- social isolation and depression
- reduced quality of life
What is a piece of evidence that fear of falling can affect balance?
VR games where someone has to walk on a beam but theyre in an aroused state leads to them having poor balance despite the task not being difficult
Maki et. al. viewed balance in fearful vs. non fearful older adults, saw a negative correlation between balance and confidence
define fear
- Physiological response to an immediate real / perceived threat
- Fight/flight response
define state of anxiety
- Unpleasant state of uneasiness or concern to a non-specific threat
- physical and cognitive elements
define confidence (efficacy)
- perceived capability to successfully perform a task
Define arousal
a state of excitement involving physiological response
when do you assess fear and anxiety in an experiment
after a task
when do you assess confidence in an experiment?
before a task
what happens when someone is elevated on a platform
- COP shifts away from the edge
- they use the stiffening strategy
what is the stiffening strategy
- stiffen the ankle joint using co-contraction
- sway amplitude goes down
- sway frequency increases
what happens when someone is threatened with perturbation?
- forward lean
- increased amplitude
- increased frequency
how does fear affect APAs?
- causes a smaller and slower APA onset
- increases likelihood of failed rise to toes
what is an example of APA changes from fear being context dependent?
- standing on edge and lean to one leg
- if leaning towards edge, APA is smaller and slower
- if leaning away from edge, APA is similar to control
- when threatened with perturbation, APA is larger
