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1) THALAMUS
- The thalamus is
the gatekeeper
and stops signals
from the
body/brain from
going to the
cerebral cortex
-
Also starts the
slow brain
waves (delta
waves) found in
deep sleep
THALAMUS
2) RETICULAR
FORMATION
- Produces main
neurotransmitters
needed for sleep
- Makes up much of
the core of the
brain stem
- Damage to this
area can cause a
coma or death
- Plays a central role
in consciousness
THALAMUS
RETICULAR
FORMATION
3) PONS
-
-
Pons has very special
set of neurons which
are only active during
REM sleep, even if
disconnected from
practically all of brain
Involved with paralysis
of limbs, as it sends
signals to brain stem to
shut down muscle
movement
THALAMUS
RETICULAR
FORMATION
PONS
4) PINEAL GLAND
- where the hormone melatonin is produced
- Melatonin helps regulate the circadian clock
- melatonin is stimulated by darkness
THALAMUS
5) AMYGDALA
- The emotion
centre which is
active during
dreaming
- studies have
shown that when
we don’t get
enough sleep, we
have a harder
time judging the
neutrality of
something and
become overly
emotional
RETICULAR
FORMATION
PONS
PINEAL GLAND
THALAMUS
6) HIPPOCAMPUS
- Memory region of
the brain which is
active during
dreaming
RETICULAR
FORMATION
AMYGDALA
PONS
PINEAL GLAND
7) HYPOTHALAMUS
- contains suprachiasmatic
nucleus which maintains the
circadian clock
- Also contains the
ventrolateral preoptic
nucleus (VRLO) which
releases neurotransmitters
that inhibit wakefulness
THALAMUS
RETICULAR
FORMATION
HIPPOCAMPUS
AMYGDALA
PONS
PINEAL GLAND