Role of Perception Flashcards
Perception?
Brain recognizes & interprets sensory information received by environment
Makes it meaningful
Impact of Perception on Performance?
eg. a coin in a pocket
Sensation tells you its round & flat
Perception tells you it’s a loonie
Perception - Size Recognition?
Helps with depth and special relations
Perception - Shape Recognition?
Helps with object/pattern recognition and stereognosis.
Perception - Color Recognition?
Helps distinguish foreground from background (figure ground)
Stereognosis?
Ability to determine what an object is through touch alone
Astereognosis = this ability is absent
Topographical Orientation?
Following a familiar route to a destination
Relies on landmark recognition
- if deficit feels like in wooded forest all the time (no land marking)
Unilateral Neglect?
A change in attention that presents as:
- Reduced visual search/scanning - no eye move’t or head turning
- Reduced awareness of sensory input from one side of the body
‘Left Sided Neglect’ vs ‘Left Sided Inattention’?
Neglect = dead (more severe) Inattention = its not there
Personal Neglect (Anosognosia)?
Lack or awareness
Pushing Syndrome?
Physically pushing to get on the affected side
No motor or sensory, so when in mid-line they think they are way over & keep doing to try to get some feedback
Evaluation for Personal Neglect?
Postural control, Motor control, Sensation
Fluff Test:
- removing stickers on self
Confrontation test:
- stimulation on affected side (sensory, touch etc.)
- we stand behind them & poke them to see if feel it (extinction)
Body Scheme Disorder?
When you’ve got a wonky understanding of body parts
- They can tell you where body part is but cant point to it
- They don’t know whats wrong with it or how to fix it
Dressing, Transfers, Wheelchair propelling need work
Spatial Neglect?
Anything within arms reach (immediate environment)
Spatial = is only addressing things on one side of field
We use Table Top Activities to look for the severity of the problem
Evaluation for Spatial Neglect?
Table top tasks:
- Clock drawing = for cognitive & perceptive
- House drawing = for object centered neglect
Purposeful Activities to treat Spatial Neglect?
Eg)
Take them to kitchen & ask them to look for a related article (coupon).
Give them plate knife fork & they only eat whats on one side of plate, spin it around they go “there it is” and eat it
Object-Centered Neglect?
Only sees part of an object
eg) Can only see part of a calculator
Environmental Neglect?
Only sees part of environment past arms reach
eg) can only see part of a doorway & nothing else
Scanning problem?
Lack of awareness to other side they are not seeing
Representational Neglect?
They ignore one side of body, only dress one side
It is not to do with eyes, it is to do with brain processes:
- Attention is missing
- She can see & distinguish between a full & half cat, but cannot draw a full cat
Visual imagery problem
Awareness Training?
A component of treatment
– an actual [& IMPORTANT] treatment goal
Impacts success of treatment and prognosis for independent functioning
We use the scale Before, During & After treatment
Scale 0 - 4 —> 0 = Need a lot of help, 4 = No help
Dyspraxia?
Motor planning deficits
- despite NORMAL motor skills, power, sensation, coordination and general comprehension
A combination of motor plan & perception
Eg) We understand what to do but cant make your body do what its supposed to do & motor plan goes wonky
=NOT a motor problem, it is a perceptive problem
- Inability to develop a motor plan based on the information you are getting
Apraxia types?
Ideomotor:
The inability to plan and perform a motor act on command even though instructions are understood
The inability to imitate a gesture
Can carry out old habitual motor tasks automatically
Ideational:
The inability to plan and perform a sequence of tasks
Affects performance bilaterally
Very frustrating
Conceptual:
The inability to use a tool appropriately
Constructional:
The inability to copy, draw or construct (assemble)
Related to problems with dressing, meal prep
eg) Dressing = inability to plan and perform the motor acts necessary to dress oneself
