Chapter 4 Flashcards
Afferent
Sensory information-information you receive
Efferent
Sends information downstream
Sensory receptor
detect stimuli and provide information
3 different types of sensory receptors
Exteroceptors-prorioceptors-Interoceptors
Exteroceptors
Receive exteroceptive information
Interoceptors
not used for movement but used for things like hunger
Proprioceptors
continous flow of sensory information from receptors regarding movement and body position
Exteroceptive information
Visual information
Rods
Rods are black and white vision, sensitive to light and located on both sides of retina
Cones
Colour vision
Focal system
function is to identify objects in centre part of the eye
Ambient system
Functions subconsciously, responsible for spatial localization and orientation
Dorsal stream
Determines “where it is”
Ventral stream
Determines “what it is”
Golgi tendon organs
Golgi tendon organ- Muscle Fibers-Capsule-Tendon
Muscle spindles
Proprioceptor that wraps around muscle fibres are are sensitive to amount of stretch on fibres/muscles
Vestibular apparatus
Located in the ear- sensitive to acceleration of the head
Postural control
Standing-involves multiple sensory inputs to tell the body where it is spatially
Spinal reflexes
An automatic involuntary response (knee jerk)
Main parts of the brain
Deicephalon, cerebrum, cerebellum
Basal Ganglia
Important to the control of gross body movements like walking
What part of the brain is associated with Parkinson’s disease?
Basal Ganglia
Cerebral Cortex
Three types of functional areas: sensory, motor, association
Primary somatosensory
deals with sensation
