The limbic system

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Zoe, Delaney, Kirsten, Courtney, Troy, Austin
 Amygdala:
almond shaped mass of nuclei involved in
emotional responses, hormonal secretions and
memory
 Cingulate Gyrus:
a fold in the brain involved with sensory input
concerning emotions and the regulation of
aggressive behavior
 Mainly
concerned with homeostasis
 Hunger, thirst, response to pain, levels of
pleasure, sexual satisfaction, anger, aggressive
behavior
 Regulates function of autonomic nervous
system
 Regulates pulse, blood pressure, breathing,
arousal in response to emotional
circumstances
 Fornix:
a band of nerve fibers that connect the
hippocampus to the hypothalamus
 Hippocampus:
acts as a memory indexer sending memories
out to the appropriate part of the cerebral
hemisphere for long-term storage and
retrieving them when necessary
 Olfactory
Cortex:
receives sensory information from the
olfactory bulb and is involved in the
identification of odors
 Thalamus:
a large, dual lobed mass of grey matter cells
that relay sensory signals to and from the
spinal cord and the cerebrum

The limbic system is considered to be
responsible for different emotions. Based off of
the different theories on emotions, memory can
effect emotion. Because the hippocampus,
where the memories are stored, is a part of the
limbic system as well as the amygdala, which is
responsible for feelings of anger and rage, and
the hypothalamus, which secretes hormones
such as dopamine (responsible for a happy or
excited feeling); the limbic system is often
thought of as the center for emotion. The
cingulate gyrus also takes in sensory info for
emotion.
 Two
of the main structures believed to be
involved in the formation of memories, the
hippocampus and amygdala, are within the
confines of the limbic system.
 The
limbic system is responsible for
“reward” and therefore thought to be
connected to motivation. The limbic system
often releases hormones to back things that
would ensure survival. For instance, sex is
linked with the limbic system as well as food,
which releases hormones that cause pleasure
because food and sex are two of the main
drives behind survival.
 The
olfactory cortex is located in the limbic
system, which involves recognition of scents
and because smell is often associated with
memory; the olfactory cortex is an important
part of the limbic system.
 http://webspace.ship.edu/cgboer/limbicsyst
em.html
 http://biology.about.com/od/anatomy/a/aa
042205a.htm
 http://its.sdsu.edu/multimedia/mathison/li
mbic/index.htm
 http://www.dartmouth.edu/~rswenson/Neur
oSci/chapter_9.html
 http://www.sciencedaily.com/articles/l/lim
bic_system.htm
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