Class Notes (1,100,000)
CA (620,000)
UTSC (30,000)
Psychology (8,000)
PSYB65H3 (500)
Ted Petit (300)

PSYB65H3 Lecture Notes - Spinal Cord, Peripheral Nervous System, Olfactory Bulb

Course Code
Ted Petit

This preview shows page 1. to view the full 5 pages of the document.
How the brain is organized about a specific function. What happens in an abnormal
situation? An accident, stroke , tumour
Basic overview of the human brain
NERVOUS SYSTEM Is divided into the central nervous system and peripheral nervous
system (CNS) and (PNS)
CNS; consists of the brain and the spinal chord
PNS: everything else nerves that run from the spinal cord out into your fingers, face,
etc. that gather information (face hot/cold, body part fell asleep) , and it also sends
information out to control the muscles of your body
Spinal cord is continuous with the brain , we just say that when it enters the back of the
skull, there isn’t much difference within the nervous system (one big interconnected
Your brain is divided into the forebrain the midbrain and the hindbrain
Hindbrain is composed of the CEREBELLUM
Cerebellum is involved with SENSORY MOTOR INTEGRATION
o Receives information from the outside world through our senses, integrates this
information and then it puts out a message to control the muscles
o If you feel hot, the brain tells the brain that you feel hot, and then it sends out a
message to the muscles to pull away from the heat source
o Nervous system receives sensory information controls that information
(integrates the information) and sends it out to the muscles
o Muscles are referred to as MOTOR CONTROL , sensory information is referred to
as sensation or sensory system
o CEREBELLUM : sensory motor integration taking sensory information and
integrating it with motor information to control your body ( allowing humans to
stand up)
o When you damage your cerebellum, they have poor balance, and have trouble
standing up
o Cerebellum sits on top of the brain stem
Medalla is responsible for basic life processes.
o Keeps you alive at the most basic level: heart beat and respiration
Midbrain: reticular formation very important for regulating sleep and wakefulness cycles
or circadian rhythms.
o Making you wake up and fall asleep (if you get a stroke in this area you probably
wont wake up)
You're Reading a Preview

Unlock to view full version

Only page 1 are available for preview. Some parts have been intentionally blurred.

Forebrain: there are several different structures
o Anterior :towards the front
o Posterior: towards the back
o Thalamus, and beneath it is the hypothalamus
o Thalamus is a relay centre: information coming from the spinal cord, is relayed
forward into more modern parts of the brain within the human
In humans we have a frontal part of the brain that does most of intellectual thought,
and to relay onto this newer place.
Underneath it is the hypothalamus it controls life processes in a more complex way
It keeps the individual and species alive for a LONGER PERIOD OF TIME
Its responsible for eating behaviour, drinking, Motivating behaviours: hunger and thirst
It is involved in territoriality we fight over territory, critical resources by fighting off
other animals
It is critical for the survival of the group and the family , aggression and violence is
associated with defending oneself and territory (fighting)
CONTROLS SEX sexual behaviour is located in the hypothalamus , which involves
finding a mate. Sexual behaviour is controlled by smells, the male smells the smell and
gets excited. Olfaction is really important for the hypothalamus. Other factors include
Finding a sexual mate, Reproductive behaviours, maternal behaviours, are all controlled
by the hypothalamus
Hypothalamus: if it feels good then it’s in the hypothalamus
Involves, eating , drinking, sexual behaviour
the hypothalamus)
System of interconnected brain parts (not simple)
Comprised of amygdala , hippocampus, olfactory bulb
System of structure that is involved in emotion
System of tightly interconnected brain structures that are involved in emotion and
Humans have a highly evolved sense of emotion
Primitive animals, don’t have a big emotional repertoire
Dogs have a relatively large emotional repertoire and are highly evolved animals.
Humans have love, passion, anger, remorse, grief , depression , revenge, an incredible
emotional repertoire
Revenge, jealousy, love, etc. Humans have much more complicated emotionality.
Emotionality in humans is an important component of our behavioural repertoire.
You're Reading a Preview

Unlock to view full version