sensory perception Flashcards
What are the Sensory Systems
Vision Hearing Taste Smell Touch
what cranial nerve is Vision
CN II (optic) Transmits light to the brain reflected from solid objects in the environment.
what Cranial nerve is Hearing
CN VIII (Vestibulocochlear)
The sense of sound perception results from tiny hair fibers in the inner ear
what cranial nerves are taste?
CN VII (Facial) & CN IX (Glossopharyngeal)
4 different receptors on the tongue
what cranial nerve is smell?
CN I (Olfactory)
The detection of odor
What cranial nerve is touch?
Tactile
CN V (Trigeminal)
Pressure perception generally on the skin
What do the senses do?
Provide information about Internal environment & External environment Enable people to experience the world Allow response to changes Help body maintain homeostasis Necessary for human growth and development
what are sensory alterations
Impairment of one of the senses; examples include partial or complete loss of hearing or vision, color blindness, loss of sensation in some body part or the loss of the sense of balance
what do sensory alterations cause?
difficulty in receiving and interpreting stimuli
Persons will have difficulty interacting safely or appropriately with the environment until compensatory mechanisms are developed
what is a stimilus
Trigger that stimulates receptor
Meaning depends on reception and processing
(e.g., loud noise, bright light, sour fruit)
what is reception?
Process of receiving stimuli from nerve endings
We are receiving thousands of pieces of information at any given moment.
what are thermoreceptors
The sense of heat or absence of heat
what are proprioceptors
The sense of the relative position of neighboring parts of the body
what are photoreceptors
Detects visible light
Reception occurs…
through receptors.
