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Hemistim

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by

Alexandra Erickson

on 22 April 2014

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Transcript of Hemistim

Hemistim

(hemisphere stimulation)
This activity involves the patient sitting at eye level with the ball in the center of the screen. The squares in the background act as a noxious visual stimulus, distracting the patient. The object is to get the patient to keep eye contact with ball while stimulus in background changes.
Instructions for Activities
Unilateral neglect
Stimulation of effected side of the brain
Visual attention
Sustained attention
Selective attention
Client Factors/Performance Skills Address
Ages: 4 yrs and older
Diagnoses: ADD, ADHD, ASD, Stroke, TBI.
Client/Population
Optokinetics (OPK)
This activity involves the patient sitting with eyes directed towards the middle of the screen. Their objective is to be able to focus their eyes on each stripe as it passes through the middle of the screen. Patient’s objective is to elicit steady, consistent eye movements throughout length of exercise.
Instructions for the Activities
Sustained Attention
Alternating Attention
Occulomotor Control
Unilateral Inattention
Client Factors/Performance Skills Addressed
Ages: 4 yrs and older
Diagnoses: ADD, ADHD, ASD, Stroke, TBI.
Clients effected by oculomotor difficulties.
Client/Population
Activity Analysis Presentation
Methods for Grading and Adapting
The size of the ball, the movement of the ball, and the stimuli in the background are all components as to how this activity is graded. The color and orientation of screen depend on which hemisphere the patient is trying to improve. For example, a beginning patient who is trying to increase function in L hemisphere would look at stimulus on R side of screen, with ball in center of screen, not moving. As attention increases, patient is moved to new levels. Higher levels would involve the ball decreasing in size, moving back and forth from center of screen to far right edge of screen, and visual stimulus in background changing in size and intensity. For those who are working to increase R hemisphere function have purple/blue stimulus and pink ball. For those who are trying to increase L hemisphere functioning have red/yellow stimulus and a red ball. The duration of administration increases as patient’s ability to attend increases (usually runs between 30-60 seconds)
Methods for Grading and Adapting
Depending on which hemisphere the patient is working on, the stripes move towards that direction, as well as change in color. Patients who are working on L hemisphere functioning have red stripes with white background, whereas patients who are trying to increase R hemisphere have purple stripes with white background. Grading is done by increasing/decreasing the width/speed of stripes, as well as adjusting the time of administration (usually runs between 10-45 seconds).
Left HemiStim Levels 1-3
Right HemiStim Levels 5-7
Left Hemisphere OPK
Right Hemisphere OPK
Full transcript