PSYC 110 Lecture Notes - Lecture 3: Frontal Lobe, Twin Study, Face Perception
Document Summary
Send and receive messages through electrical signals and chemicals. Dendrites: portion of the neuron that receives signals. Axon: portion of the neuron that sends signals. Axon terminals: knoblike structure at the end of an axon. Contain synaptic vesicles: tiny spheres that contain neurotransmitters. Neurotransmitters: chemical messengers specialized for communication from neuron to neuron. Synapse: space between two connecting neurons through which messages are transmitted. Neurons respond to neuron transmitter by generating electrical activity. Depend on the potential difference in electrically charged particles inside vs. outside the neuron. When no nt"s are acting on the neuron. More negative particles inside then outside the neurons. Both + and are flowing in and out of the membrane surrounding the neuron. When electrical charge inside the neuron reaches the threshold. Electric discharge triggered by change in charge inside the axon. Action potentials travel faster in myelinated neurons than in unmyelinated neurons.
