PSYC 2390 Lecture Notes - Lecture 2: Gustav Fechner, Barbiturate, Psychophysics

• School: University of Guelph
• Department: Psychology
• Course: PSYC 2390
• Professor: Paula Barata

Document Summary

Pre-synaptic transmission before the end of the neuron. Ions have an electrical charge because one of the ions stole an electron. Electricity is the movement of the charged particles. Oscilloscope trace is connected to a voltmeter. In the extracellular space there is a lot of sodium ions (na+) The intracellular space has a lot of negative charges (amino acid) and k+ (potassium) Action potential is after stimulation when the sodium rushes in and the potassium leaves. The properties of the action potential: all or nothing, no big or little action potential they are all the same size. Thursday, jan 14th, 2016: each neuron has receptor cites, post synaptic is after synapse when the neurotransmitter hits the next neuron, neurotransmitters can have 2 different types of effect, excitatory neurotransmitter . Increase the chances of action potentials per second. Make it easier for that neuron to have an action potential pushing the membrane potential in a positive direction.