perception and cognition Flashcards
perception
The integration of sensory impressions into meaningful information
-hear sounds and recognizing, recognizing visual info, feeling object and knowing what it is.
ataxia
absence of motor planning ability
lack of purposeful, skilled mvnt that cant be attributed to weakness, tremor, spasticity, loss of position sense.
(have the ROM but cant do things on command/imitate)
ideational apraxia
inappropriate tool use, sequences activity incorrectly, overall loss of concept of task, uses familiar objects incorrectly, cant relate object together (cant put toothpaste on tooth brush)
cant imitate or stop task (hand over hand)
ideomotor apraxia
disorder of the production praxis system. A loss of kinesthetic memory patterns so that purposeful mvnt cant be produced or achieved due to defective planning and sequencing of mvnts even though the idea/purpose of task is understood. (dif. executing task in smooth pattern).
Assessments for Apraxia
Content- what the pt. needs to do (handle basic tools to get job done)
Temporal- time factor, efficiency, finish task while using task efficiently
Spatial- over shooting, under shooting, bad deph perception
initiation (intervention)
developing necessary plan of action and selecting objects (hand over hand assist, help start task)
execution (intervention)
performing the plan (guiding, talking through)
control (intervention)
detect and correcting errors to ensure desired end result (spatial problems)
Error less learning
(for more dif. tasks)
preventing mistakes through verbal and physical support versus trial and error.
Used for apraxia and memory impairments.
(modeling how you do routine through entire task)
hand over hand, repetition, tell pt. correct way.
hemianopsia
Blindness in 1/2 of visual field , sensory loss within visual field (most improvement in 1st month).
visual discrimination deficits
Depth perception (sereopsis) 3-D understanding of object
Figure ground- foreground from background (being able to find objects when their on top of each other).
Spatial relations- relationship of objects to each other and self (reaching, how close are objects )
agnosia
Inability to recognize incoming sensory information
relatively rare
*loss of ability to recognize objects, people, sound, and shapes.
visual agnosias
Object agnosia- cant recognize objects in the environment
Prosopagnosia- poor face recognition -not recognizing family/maybe by voice but NOT face
Simultanagnosia- inability to recognize whole visual scenes (home, beach, ect)
Alexia: inability to recognize letters or words
tactile agnosia (asterognosis)
inability to recognize tactually presented objects despite adequate sensory, language and intellectual abilities
Agnosia assessments
rule out sensory and memory loss, inattention, language deficit, or dementia
Present objects and allow patients to identify objects through second sense if they respond “idk” first
**if more than one sensory modality is involved it is most likely not agnosia.