Lecture 13: Attention and Perception

Question 1

what is the most common symptom of right hemisphere middle cerebral stroke

Answer 1

spatial neglect and inattention

Question 2

why is there less of a negative impact on attention if the left side is affected

Answer 2

the right side of the brain attends to both sides

Question 3

what is Unilateral Neglect

Answer 3

a deficit in attention

A failure to orient to, or report, stimuli presented on the side contralateral to the cerebral lesion

Question 4

what is the relationship between unilateral neglect and ADL recovery

Answer 4

it’s a Major predictor of poor recovery for ADL

Question 5

what are the 4 aspects of unilateral neglect

Answer 5

Sensory components

motor components

stimulus characteristics

functional asymmetry

Question 6

what is the sensory component of unilateral neglect

Answer 6

might not feel that they are sitting on their left hand

Question 7

what is the motor component of unilateral neglect

Answer 7

Individual does not use affected limb according to available motor control

attends to one side over the other (dressing, grooming, etc)

Question 8

what is the stimulus characteristic of unilateral neglect

Answer 8

there are different presentations of neglect

Question 9

what is egocentric neglect

Answer 9

most common

with L and R hemi-spaces based upon observer’s midline

won’t pay attention to the whole left side of what they see

Question 10

what is allocentric neglect

Answer 10

less common

they can’t pay attention to the left side of each thing individually

Question 11

what is personal neglect

Answer 11

neglect of the left side of their body

hand reach test or razor test would be impacted

Question 12

what is peripersonal neglect

Answer 12

neglect within arms reach

bells test, letter cancelation, line bisection would be affected

Question 13

what is extrapersonal neglect

Answer 13

neglect beyond reach

ability to describe articles in the room would be impacted

Question 14

what is the Functional asymmetry of unilateral neglect

Answer 14

they would favor their unaffected side

Question 15

what is the intervention chosen for neglect dependent on

Answer 15

the client’s level of awareness

Question 16

what are 2 kinds of remediation strategies for neglect

Answer 16

scanning training (perceptual anchors)

lighthouse strategies

Question 17

what are compensation strategies for neglect

Answer 17

place items on the right side

have people sit on their right side

Question 18

what is perception

Answer 18

integration of sensory impressions into psychologically meaningful information

Primary sensation must be intact in order for a perceptual deficit to be identified.

Question 19

what are figure-ground perception deficits

Answer 19

Ability to distinguish foreground from background

glasses in drawer, arm in peach sleeve, etc

Question 20

what are Form Constancy perception deficits

Answer 20

Ability to attend to subtle variations in form of objects

distinguishing two objects that look similar

Question 21

what are position in space perception deficits

Answer 21

Ability to interpret positioning of objects in relation to each other
or to oneself

( In-out, up-down, front-back)

Question 22

what are Spatial Relations Constancy deficits in perception

Answer 22

Perceiving position of 2 or more objects in relation to each other and oneself
(depth perception)

Question 23

what are the 2 main aspects of the functional approach intervention for General perceptual deficits

Answer 23

task specific training

environmental modifications (less clutter and constrasting colours)

Question 24

what is task specific training

Answer 24

De-emphasize visual demonstrations and spatial based language

Question 25

what is visual agnosia

Answer 25

Acuity intact but unable to recognize objects by vision alone

May recognize with tactile or auditory skills

ex: Prosopagnosia – inability to recognize face

Question 26

what is Tactile Agnosia (Astereognosis)

Answer 26

All sensation/proprioception is intact

inability to recognize objects tactually

Question 27

what is Body Schema Agnosia (anosagnosia)

Answer 27

inability to recognize own body parts and relationship to the world

Question 28

what are the 2 most common deficits for left hemisphere damage

Answer 28

Motor perception (apraxia)
Language perception (aphasia)