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First things first. Lab report submission. Monday’s Journal Ethical considerations of animal research in Psychology. Today’s learning outcome. Using one or more examples, explain effects of neurotransmission on human behaviour Introduction to neurons and neurotransmitters.

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first things first
First things first...
  • Lab report submission

Unit 2: Biological LOA

today s learning outcome
Today’s learning outcome
  • Using one or more examples, explain effects of neurotransmission on human behaviour
    • Introduction to neurons and neurotransmitters

Unit 2: Biological LOA

slide4

It is estimated that there are between __________ neurons in nervous system and neurons make ___________ connections with each other.

Neurons send ___________ to the brain so that people can respond to stimuli either from environment or from internal changes in body. This is called __________.

The parts of neurons that send messages are the ____________, and the parts of neurons that receive messages are the ______________.

When an electrical impulse travels down the axon of the neuron, it releases _________ which then cross the gap between two neurons.

The space between the dendrites of one neuron and the axon of another neuron is called the _________________.

In the year __________, a man named ___________ first discovered neurotransmitters during an experiment with frog hearts.

Neurotransmitters are the body’s natural _____________. They transmit information from one ___________ to another.

Once the message is passed on, neurotransmitters are either broken down or reabsorbed by terminal buttons. This is called _______.

Neurotransmitters shown to have a range of effects on ________ including ________ and ___________.

Unit 2: Biological LOA

neurons
Neurons
  • Nerve cells, called neurons= one of building blocks of behaviour
  • Estimated that there are between 10 and 100 billion neurons in nervous system and neurons make 13 trillion connections with each other

Unit 2: Biological LOA

neurons1
Neurons
  • Neurons send electrochemical messages to brain so people can respond to stimuli either from environment or from internal changes in body
  • The method by which these messages are sent is called NEUROTRANSMISSION

Unit 2: Biological LOA

a brief history
A brief history...
  • In the year 1921, a man named Otto Loewi first discovered neurotransmitters during an experiment with two frog hearts.
  • He shared the Nobel Prize with researcher Henry Dale in 1936 for their findings on neurotransmission.

Unit 2: Biological LOA

slide8

Dendrite –receives message Axon – sends message

Myelin sheath – insulates axon, speeding up transmission

*Dendrites detect, axons announce*

neurotransmission
Neurotransmission
  • When an electrical impulse travels down the axon of the neuron, it releases neurotransmitters which then cross the gap between two neurons
  • This gap is called a synapse

Unit 2: Biological LOA

so what is a neurotransmitter
So what IS a Neurotransmitter?
  • Body’s natural chemical messengers
  • Transmits information from one neuron to another
  • Stored in the neurons’ terminal buttons
  • After crossing the synapse, neurotransmitters fit into receptor sites on the post-synaptic membrane, like a key in a lock
  • Once the message is passed on, neurotransmitters are either broken down or reabsorbed by terminal buttons. This is called reuptake.

Unit 2: Biological LOA

information flow through neurons
Information flow through neurons

Unit 2: Biological LOA

neurotransmission1
Neurotransmission

Unit 2: Biological LOA

neurotransmitters and behaviour
Neurotransmitters and behaviour
  • Neurotransmitters shown to have a range of effects on human behaviour
  • Neurotransmission lies beneath behaviours as varied as mood, memory, sexual arousal and mental illness

Unit 2: Biological LOA

watch the video on neurotransmitters
Watch the video on Neurotransmitters

Take notes as you watch

Unit 2: Biological LOA

today s journal entry
Today’s Journal Entry

Create and label your own diagram for the information flow through the neuron

This can either be a simple flow chart or an illustration of a neuron

Unit 2: Biological LOA

next session
Next session
  • We will be looking at the effects of neurotransmission on behaviour

Unit 2: Biological LOA