Evidence For Rehab Interventions For TBI Flashcards
What are the 4 parts of the brain’s motor system
Posterior cortex, prefrontal cortex, Premotor cortex, motor cortex
What does the posterior cortex do
Provides sensory info to the frontal cortex
What does the prefrontal cortex do
Plans movement
What does the premotor cortex do
Organizes movement sequences
What does the motor cortex do
Executes actions
What is the final common pathway
Corticospinal tract
What is the posterior parietal cortex
Sensory assoc. area and intermodal integration of incoming sensory info to the
-area of planned movement**
What 3 structures are involved with planned movements
-vision from occipital to frontal eye fields
-auditory cortex
-somatosensory cortex
4 benefits of tilt table
-prevent contractures
-verticality** (engages vestibular, somato, postural responses)
-wt bearing
-increased load for bone density
What is the superior collicus function? Found where?
Helps brain respond to environment stimuli; brain stem
What is first thing to tx in severe TBI
Visual attention
3 ways DAI affects visual attention in severe TBI
-difficult scanning scene
-slow rxt to stimuli
-spatialize orientation head and eyes
What to advance to after visual attention. Examples
Automatic/subconscious
Sit pt up (endurance, head/trunk righting response, visual tracking)
What to advance to after automatic/subconcious. Ex?
Planned/purposeful
Vision and objective recall, 2-3 step command
What to advance to after visual attention? Purpose/fxn?
Adding posterior parietal cortex
Ability to attend relevant stimuli and ignore others
What is visuospatial attention
Selects relevant input in environment for motor planning
Key to movement is processed where
Sensory cortex
What is after adding posterior parietal cortex in tx
Prefrontal cortex and planned movements
Examples of prefrontal cortex/planned movement tx
STS for acts
Transfers on various heights and surfaces
What are mirror neurons
See a person perform action is the same as performing the action (premotor neurons fire)
Plans do what to movement
Correct it
What can help improve movement outcomes
Watching others practice
How does premotor cortex activate (from study)
At sight of cue
What do neurons do when they see a cue of action
Encode intention to perform movement
Selection of movements based on external cues
The premotor cortex _______ to select specific motions based on _____________
Learns, external events
What is the key to increasing neuroplasticity
Gradual progression
How to gradually progress task based interventions
Progressively challenging
-change environment
-add resistance
-complex movements
What is the supplemental motor area
Where 10% of corticospinal tracts originate from
Connected to primary motor cortex
Complex sequence of movements
When does primary motor cortex activate
5-100 ms before initiation of movement
What does primary motor cortex encode
Force, direction, speed and extent of movement
What parts of the brain does the primary motor cortex engage
SMA, BG, cerebellum, thalamus
Describe the task demand circuitry
-Activated premotor cortex
-primary motor cortex
-corticospinal tracts originate
-motor program achieved via mus spindle to cerebellum
-motor behavior = goal
