Lecture 13: Attention and Perception Flashcards
what is the most common symptom of right hemisphere middle cerebral stroke
spatial neglect and inattention
why is there less of a negative impact on attention if the left side is affected
the right side of the brain attends to both sides
what is Unilateral Neglect
a deficit in attention
A failure to orient to, or report, stimuli presented on the side contralateral to the cerebral lesion
what is the relationship between unilateral neglect and ADL recovery
it’s a Major predictor of poor recovery for ADL
what are the 4 aspects of unilateral neglect
Sensory components
motor components
stimulus characteristics
functional asymmetry
what is the sensory component of unilateral neglect
might not feel that they are sitting on their left hand
what is the motor component of unilateral neglect
Individual does not use affected limb according to available motor control
attends to one side over the other (dressing, grooming, etc)
what is the stimulus characteristic of unilateral neglect
there are different presentations of neglect
what is egocentric neglect
most common
based upon observer’s midline
won’t pay attention to the whole left side of what they see
what is allocentric neglect
less common
they can’t pay attention to the left side of each thing individually
what is personal neglect
neglect of the left side of their body
hand reach test or razor test would be impacted
what is peripersonal neglect
neglect within arms reach
bells test, letter cancelation, line bisection would be affected
what is extrapersonal neglect
neglect beyond reach
ability to describe articles in the room would be impacted
what is the Functional asymmetry of unilateral neglect
they would favor their unaffected side
what is the intervention chosen for neglect dependent on
the client’s level of awareness
what are 2 kinds of remediation strategies for neglect
scanning training (perceptual anchors)
lighthouse strategies
what are compensation strategies for neglect
place items on the right side
have people sit on their right side
what is perception
integration of sensory infos into meaningful information
Primary sensation must be intact in order for a perceptual deficit to be identified.
what are figure-ground perception deficits
Ability to distinguish foreground from background
glasses in drawer, arm in peach sleeve, etc
what are Form Constancy perception deficits
Ability to attend to subtle variations in form of objects
distinguishing two objects that look similar
what are position in space perception deficits
Ability to interpret positioning of objects in relation to each other or to oneself
( In-out, up-down, front-back)
what are Spatial Relations Constancy deficits in perception
Perceiving position of 2 or more objects in relation to each other and oneself
(depth perception)
what are the 2 main aspects of the functional approach intervention for General perceptual deficits
task specific training
environmental modifications (less clutter and constrasting colours)
what is task specific training
De-emphasize visual demonstrations and spatial based language
