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Chapter 3: The Biology of Behaviour CA$11.10
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  3. Carleton University (CU )
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  7. PSYC1001 - Introduction to Psychology I (PSYC1001)

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Chapter 3: The Biology of Behaviour

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Notes for the third chapter of the textbook Weiten, W. & McCann, D. (2019). Psychology: Themes and Variations. Fifth Canadian Edition. Nelson Education Ltd. as well as lecture notes for the biology of behaviour.

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  • March 28, 2019
  • 6
  • 2018/2019
  • Class notes
  • Mathew sorley
  • Chapter 3

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Chapter 3: Biology of behaviour

Neurotransmitters:
Neurons: single cells, covers axon in segments, gaps in between (node of Ranvier)
Multiple sclerosis, loss of myelin
Neural impulse: communication, presynaptic (sending neuron) and postsynaptic (receiving
neuron)

Myelinated axon: white
Unmyelinated axon: grey

Generating on action potential, change in electrical relationship that spreads down axon
during nerve impulse




Acetylcholine (Ach): memory, attention, arousal, Alzheimer’s disease, control of skeletal
muscles

Dopamine: pleasurable emotions, reward, voluntary movement, parkinson’s disease

, Serotonin: sleeping, arousal, mood

Norepinephrine: attention, arousal, mood chemical precursor to epinephrine

GABA: major inhibitory NT

Glutamate: learning, memory

Endorphins: altering perception of pain, feelings of well-being




Nervous systems:
The Central Nervous System:
consists of the brain and the spinal cord
Spinal Cord: connects the brain to the rest of the body through the peripheral
nervous system, spinal reflex (stimulus, afferent neurons carry signals to spinal cord,
efferent neurons carry signals from brain and spinal cord to muscles)
Brain: part of the central nervous system that fills the upper portion of the skull,
carries out instructions of the brain
Brain stem: medulla oblongata (keeps
breathing, heart running, can be affected by alcohol bc
suppresses breathing and heart rate), pons (sleeping and
dreaming), reticular
formation (ability to
attend, sleep and
arousal)

Cerebellum:
coordinated movement, motor function, balance
(alcohol influences coordination within cerebellum)
Forebrain and Subcortical Regions:
Midbrain: locating things in space, dopamine synthesis

Forebrain:

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