5 Perception Flashcards
1
Q
What are the areas of the parietal lobe for perception?
A
- Areas 3a and 3b = receive individal receptor information
- Area 1 - further processings: movement
- Area 2 - combines information from 1 and 3a = perception such as object Identification
- Area 2 sends infromation to entire body surface (homunculus) of the primary motor cortex
2
Q
What is perceptions relationship with sensory and movement?
A
- Sensory processing preceeds movement
- motot = Internal representation + desired movement
- Action is guided by perception
- coordinated movement in space
- know where in space object is
- personal space
- body image, schema, spatial perception
3
Q
What is the posterior parietal cortex-develops percetions?
A
- posterior parietal lobe integrates somatic sensory input with other sensory modalities to give rise to perceptions and to focus attention in extra personal space
4
Q
What are the deficits related to spatial perception, visuomotor intergration, and directed attention
A
- Agnosia
- Figure ground
- Apraxia
- Neglect
5
Q
What is Agnosia?
A
- lose ability to interpret or have meaning of things
- loss ability to identity things through touch or vision
6
Q
What is steriognosis? What is the examination?
A
- The ability to utilize somatosensory information (proprioception and touch) to ID objects
- Examination: ID object in palm
- Familiar shaped objects (ball or key rather than circle triangle)
7
Q
What is asteriognosis? What is the intervention?
A
- Inability to recognize the form of objects through somatosensation
- Intervention: practice differentiating objects through tactile system
- practice shaping hand for different objects
- Descrimination
- practice shaping hand for different objects
8
Q
What is Figure ground deficit? What is the examination and intervention?
A
- People who have deficits in figure ground organization have difficuty visually differentiating objects from surroundings
- Background or foreground?
- Examination: Figure ground test
- Intervention: Insruct person to ID imporant aspects from visual environment
- generally an area treated by OT
9
Q
What is Apraxia?
A
- Inability to carry out multi-step actions for an action goal (ADL) and perform tool based actions
10
Q
What are the 3 types of apraxia?
A
- Deficits in sequencing action steps
- omit certain steps
- Conceptual errors knowlege of tool purpose and gestures
- spacial-temporal oraganization errors during movement
- wrong movements in motor planning
11
Q
What are interventions for Apraxia?
A
- Errorless guidance of movement with many reps
- Teaching similar movements under different contextual siutaiosn
- Strategy training most effective
- Use of verbal cues improves apraxia when cues are faded
12
Q
Whar are deficits in the R posterior parietal cortex?
A
- Neglect syndrome
- Distrubance in directed attention
13
Q
What is neglect?
A
- Disorders of perceptive spatial relationships
- Neglect of the left side of the body
- Neglect of the L visua stimuli
- lack of access to memories of earlier perceptions on the neglected side
14
Q
What is the examination of neglect?
A
- Observe dressing, rolling, reaching, wheeling (bumping into walls)
- Cancellation test (crossing off letter or number)
- only crosses R side
- copying objects
- Line bisection test
15
Q
What is the examination of attention?
A
- Extinction test
- light tough unilaterlly and then bilaterally
