SI Dysfunction Flashcards
what is the definition of sensory integration?
organization of sensory input for use
what is sensory integration a foundation for?
adaptive responses to challenges of the environment and learning
what else is sensory integration a foundation for?
meaningful and purposeful participation in daily activities
Sensory integration is the ___________ interaction between __________ and ___________
dynamic; abilities and environment
what are considered “intrinsic abilities”
proprioception, vestibular, vision, and auditory …. but they rely primarily on environment
what is “set point”
point at which the child begins to perceive sensory input and is able to organize it to produce an appropriate adaptive response
what does it mean if a child has a HIGH set point
they will be hypo-responsive to stimuli
what should you consider when thinking about how the CNS differentiates between input that is related and non-related?
set point, internal and external feedback
when feedback to be processed is increased in frequency and variety, what happens?
more difficult the adaptive response is to organize.
what is the ability to organize and use sensory info?
sensory integration
why is sensory input important?
- gives info on environment, 2. motor learning purposes, 3. body scheme, 4. sensory experience for new posture, 5. stimuli changes the context of the movement
what happens if there is a lack of sensory input?
child is unable to read the environment
what is critical for motor learning?
assimilation of information to accommodate new ways of movement
what should a PT consider before giving sensory input?
environment and the analysis of movement
what are the proximal senses?
proprioception, vestibular, and tactile
what are the distal senses?
vision and hearing
what is the definition of adaptive response?
sensory integration is functioning properly and the child organizes a successful, goal-oriented action on the environemtn
sensory integration leads to _________ __________, which in turn results in __________________________.
adaptive responses; sensory integration that is more efficient.
what is it called when the child makes an adaptive response and change occurs at the neuronal synaptic level?
neural plasticity
Development of SI occurs as:
CNS organizes sensory info and adaptive responses with increasing degrees of complexity
what is the first known response to vestibular input?
Moro reflex that appears at 9 weeks postconception
what plays an important role in fostering feelings security in the infant?
tactile sensation
________ system is fully functional at birth, while the _________ and __________ systems refine throughout childhood
vestibular; visual and proprioceptive
when do babies start developing vestibular-proprioceptive-visual connections?
first 6 months of life – developing postural control
when does tactile perception become further refined and play a role in the child’s developing hand skills?
6-12 months
does sensory integration disorder refer to one particular type of problem or more than one?
more than one… its a heterogeneous group of disorders
what are the two ends of the spectrum for the SID
- hyper and 2. hypo
what is sensory defensiveness
child is overwhelmed by ordinary sensory input and reacts defensively to it (negative with activation of sympathetic nervous system)
what is tactile defensiveness
overreaction to ordinary touch sensations… experience irritation and discomfort
what is gravitational insecurity?
hyperresponsivity to vestibular sensations… excessive fear during ordinary movement activities
what is sensory discrimination and perception?
allow for refined organization and interpretation of sensory stimuli
children that have proprioception problems appear:
clumsy, distracted, and awkward
what is praxia?
ability to conceptualize, plan, and execute a non-habitual motor act
what is somatodyspraxia
sensory integrative deficit that involves poor praxis and impaired tactile and proprioceptive processing
what is spacial visualization?
motor-free visual space perception; mental manipulation of objects