Neuroscience Flashcards
the biology of mind
neuroscience
belief feeling bumps on someone’s head to tell personalities, skull forms around the brain ~ the areas with the biggest bumps tell something about you
phrenology
who created the idea of phrenology
Franz Gall
what was the importance of phrenology?
introduced us to brain localization
different areas of the brain do different things
brain localization
which two things disconnected in the case of phineas gage?
frontal lobes and amygdala
how was phineas gage psychologically?
all over the place, emotions were everywhere
what happened between phineas gage’s frontal lobes and amygdala?
they were severed and couldn’t control eachother
the case of phineas gage tells us more about _____ _____?
brain localization
when was the case of phineas gage?
1848
staining cells to look at characteristics?
cajal
when was cajal used?
1887
neurons are individual units that “talk to” eachother
neurone doctrine
how many billion neurons and glial cells?
each 80-100 billion
what are the two components of a neuron?
- cell body
2. fibers
where all basic functions within a cell occur
cell body
(fibers)- receives signals from memories?
dendrites
(fibers)- transmits out signals?
axon; myelin sheath
disease where the myelin sheath erodes
MS; multiple sclerosis
information travels through an impulse that travels down an axon
neuron transmission
neurons communicate over a gap called…
a synapse
four steps of a neural connection
- action potential (AP) travels down the axon
- the AP causes a neurotransmitter to be released
- neurotransmitter crosses the synapse and binds to the receptor site on a receiving neuron
- causes the AP to be generated in the receiving neuron
the sending of neurons absorbs any excess neurotransmitters
reuptake
how many neurotransmitters; how many major
over 100; 21 major
large molecule neurotransmitters
neuropeptides
small molecule neurotransmitters
individual amino acids
mimics neurotransmitters, sometimes the brain is fooled
agonist
substance can block neurotransmitters
antagonist
type of neurotransmitters (1/7)- controls muscular movement; ex: venom
ACh (acetylcholine)
type of neurotransmitters (2/7)-controls movement, regulation of emotion; ex: Parkinson’s
dopamine
type of neurotransmitters (3/7)- related to mood, stronger than dopamine; ex: depression, skits
serotonin
type of neurotransmitters (4/7)- how alert you feel; ADHD, drowsy
norepinephrine
type of neurotransmitters (5/7)- regulates the levels of all the others, proper balance, regulator
GABA
type of neurotransmitters (6//7)- related to memory, essential for memory
glutamate
type of neurotransmitters (7//7)- to fight off painful sensations, related to mood a ~little~ bit; ex: heroin
endorphins
two components of the nervous system-
- central (CNS)
2. peripheral (PNS)