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Chapter 4

PSYC 1010 Chapter Notes - Chapter 4: EndorphinsPremium


Department
Psychology
Course Code
PSYC 1010
Professor
Rebecca Jubis, Odette Weiss, Giulia Rinaldi
Chapter
4

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PSY
C
1010 Module
4Neural7
Hormonal
systems
biology
behaviour7mind stems
fromGail'sideaof
phrenologycaine
rent
parts
different
parts
of
the
brain
control
different
aspects
of
behaviour of the brainareresponsible
fordire
rent
biological
psychologists
use
technology
to
link
biological
processestopsychological
processes they
have
found behaviours
our
brain
changes
based
on
our
experiences
nerve
cells
communicate
by
conducting
electricityinbetween
their
gaps
specific
brain
systems
serve
different
functions
we
used
the
information
from
these
brain
systems
toconstruct
our
experiences
this
is
known
as
thebio
psychosocial
system
howbiologicalpsychological
and
social
systemsinteract
andwork
together
thepowerof
plasticity
neural
changeduetoexperiencesis calledplasticity
the
brainis aworkinprogress
alwayschanging 3improving
it willoften
develop
patterns
basedonyour
experiences7howfrequentlyyougo
through
them
the
brain
youwereborn wis notthebrainyou will die w
neuralcommunication
neuronsnerve
cellsarethebuilding
blocksof our nervoussystem
haveacellbody
dentrite
toreceive
information7sendsittothe
cell
body
Atonpasses
the information
along
toother
neuronsmuscles orglands
myelin
sheathsarelayersof
fatty
tissuesthatinsulatedtheaxons
gilal
cellsprovidenutrients3supporttonervecells
she r
helIs
Ifs
i
neuralimpulses l
aneuron
sendsamessageby
firing
neural
impulse
called
the
action
potential
theseimpulsesareactually
very
slow that'swhy we tendto have
delayedhens toevents
the inside of an axon has amostlynegative
change
theaxon is surrounded
byafluidwithmanypositive Nat sodium ions
theaxon'ssurface is selectivelypermeablecallowingonly
certain
things
in 2out of it
the
restingpotentialiswhenthe fluidoutsidethe axonispositive3theaxonis
negative
when aneuronsends animpulse
the
axons
gatesopen
3positive
Nations
enter
the
negative
axon
causingdeplorization
4
the
deplorization
of
one
channel
triggers
the
demonization
of
another
atom
channel
ifthese
triggers
areofahighenough
voltage itwill
pass
thethreshold passingthethreshold
isimportantbecausethethresholdis thelevelof stimulation
needed to
trigger aneuralimpulse
oncethe threshold
ispassed an impulse is actuallyfired an official
messageissentout oftheterminalbranchesoftheatom and to other
neuronsmuscles or glands
after all this work the axon dips into arefractoryperiod
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