PSYB65H3 Lecture Notes - Circadian Rhythm, Hindbrain, Reticular Formation

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Published on 17 Apr 2013
School
UTSC
Department
Psychology
Course
PSYB65H3
Professor
Lecture 1
CNS Brain and spinal cord
PNS everything else (nerves from spinal cord that run out to diff
parts of body to gather information)
Spine is continuous with brain
Subdivisions of brain (very general) Forebrain, Midbrain, Hindbrain
Hindbrain: cerebellum (sensory motor integration takes
info from body and linking it to motor to control body
properly), medala (basic life processes heart
beat/respiration)
Midbrain: Reticular formation -controls sleep/wakefulness
cycles or circadian rhythms
Forebrain:
o Thalamus (relay center info from spinal cord all
about our bodies relayed to more modern parts of brain
in humans)
o Hypothalamus (controls life processes keeps
individual/species alive over longer period of time,
eating behaviour…territoriality/fighting among
animals…sexual behaviour – animals release smell,
humans ..FOUR FS (finding, feeding, fighting, fucking)
o Limbic system Amygdala, hippocampus, sometimes
hypothalamus system of brain structures involved in
MOTION/EMOTIONALITY
Humans have high sense of emotion
Huge component of brain
o Cerebral cortex or Nerocortex (New cortex)
Most largest/complex in humans
Intellectual thinking
Ability to store information for generations after
Allows humans to distinguish themselves from
other animals
Evolution of the Brain:
Dogfish spinal cord becomes more intelligent through evolution
(more nuclei = more brain cells, more reaction in a more complicated
way)…forebrain associated with high intellectual functions,
more evolved the species the larger the cortex
Size of a structure is directly related to the function and importance
of that particular species (smell is very important to rats, part of the
brain that deals with smell that part of brain is very large)
Most intelligent animals have largest cerebral cortex (humans
and dolphins)
Development of the Brain in Humans:
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Document Summary

Pns everything else (nerves from spinal cord that run out to diff parts of body to gather information) Subdivisions of brain (very general) forebrain, midbrain, hindbrain. Hindbrain: cerebellum (sensory motor integration takes info from body and linking it to motor to control body properly), medala (basic life processes heart beat/respiration) Midbrain: reticular formation -controls sleep/wakefulness cycles or circadian rhythms. Huge component of brain: cerebral cortex or nerocortex (new cortex) Ability to store information for generations after. Allows humans to distinguish themselves from other animals. Dogfish spinal cord becomes more intelligent through evolution (more nuclei = more brain cells, more reaction in a more complicated way) forebrain associated with high intellectual functions, more evolved the species the larger the cortex. Size of a structure is directly related to the function and importance of that particular species (smell is very important to rats, part of the brain that deals with smell that part of brain is very large)

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