Psyc 2 Week 1 Quiz

sensation

fundamental components of an experience

perception

processes used to create meaningful interpretation of sensation

sensory processes

reception, transduction, and coding

reception

taking in environment stimulus from the senses; light energy, for example

transduction

change stimulus energy into an electrochemical neuronal change

coding

correspondence between stimulus features and neuronal activity in the occipital lobe

behavioral response

perception, recognition, action

purkinje cell

largest cell in the cerebellum

golgi’s belief about neurons

neural net hypothesis: “neurons are a continuous mass of tissue”

Santiago Ramon and Cajal’s beliefs about neurons

Neuron Doctrine: each neuron is an individual cell, all working together for a common purpose, forming the nervous system

Two main types of cells in the brain

neurons, glia

cell membrane

encased by 2 layers of phospholipids (hydrophilic heads, hydrophobic tails)

neurons

processing, transfer, storage of info

neuroglia

for support, regulation, protection of neurons

neurons are busy

requires a lot of different organelles working in unison

cell channel

4-6 proteins gathering together, allowing things such as ions to pass through the cell membrane

afferent neurons

sensory neurons: transmit sensory information from the PNS to the CNS

efferent neurons

motor neurons: transmit motor info from CNS [spinal cord] to muscles, glands, adipose tissue…

interneurons

inside spinal cord; transmit information between neurons within CNS; analyze inputs, coordinate outputs. most common type of neuron, with 20 billion; all are multipolar

classifications of neurons

multipolar, bipolar, pseudounipolar, anaxonic

mulitpolar neurons

many processes (very common)