The alpha motor neuron is the final common path of behavior (Sherrington)
-Is efferent; goes out to cause a muscle contraction
What does afferent mean?
-Coming into the brain
What does efferent mean?
-Going out of
5 quizzes and 1 gets dropped
The anayomy of the spinal cord
When you get hit in the skull, the brain swells. Same thing happens in the spin
How is taste and smell alike?
How is touch and taste alike?
-Must come in contact with them
Conceptual Organization of the course
-Homeostasis: OKellys Model
-Detection of stimuli
-Orientation to th
Transduction: Conversion of environmental stimuli to
What is sound?
-Waves = pressure change
-Waves get picked up by the eardrum
-Go from acoustic wave to a mechanical wave
-Sound comes, has pressure and bangs against the drum.
-The first transd
Two types of ADD
-Diagnosis is different in adults and adolescents
-Will talk to teachers, adults, and the child
-Do they have trouble doing homework, cleaning room,
and taking note
-Alpha motor neuron
the tighter the contraction of a muscle, the more excited the golgi tendon organ will
-The Golgi tendon organ is trying to inhibit the contracti
What is a reflex
-An automatic reflex that we can inhibit
All movement is based on reflex
-There are opposing muscles that move us back and move us forward
Know the spinal cord anatomy
Know two forms of hearing loss
-Susceptible to loud noise hair loss, unrecoverable
-Calcification of the middle ear bones
Whats a homunculus?
-Shows how much of each body part youre using
-Not a lot of sensory neurons attach
Whats the relationship between visual acuity and the size of receptor fields?
-Visual acuity is how much detail there is
-The smaller the receptive the field, the larger the acuity
Basic principle: if a species is good at s
-Makes the connection faster
What factors influence speed of neural conduction?
What is the purpose of myelin?
Is myelin only on axons?
If you were designing the system where else w
Function of the Seventh Cranial nerve
-Motor: innervates the muscles of face and portions of the neck
-Thus altering the ability ot make facial expressions
-What impact would there be on prosody
-Sensory: Does not play
-Above optic chiasm
Information from ganglion cell head towards the LGN
-Some information goes here
-Other information goes to the Supra-chiasmatic nucleus
-Critical in maintaining circadian
The large diameter and small diameter axons are going to convey different types of
The large diameter axons carry signals faster and get to your brain faster.
-Pain is sharp
Small diameter conveys dull pain
All sensory systems except the olfactory system come through the cortices system.
The primary somatosensory comes through the region labeled PC
There are some muscles associated with the genitals, however most people h
Quizzes are cumulative
-Should know the difference between central nervous system and peripheral
What is prosody?
-Tone of voice, facial expressions, censored words, rhythm, proximity
-People with diso