Isotoon explains psychology by showing what happens in the brain and in the study. Ask about memory, conditioning, neurons or research methods and get a short animated video of how it works and what the evidence showed.
Psychology mixes biology, behavior and research design. Ask about a concept from the unit you are reviewing and see it explained with what happens in the brain and in the study.
A neuron at rest keeps its inside slightly negative compared with the outside. When incoming signals push it past a threshold, sodium channels open, sodium ions rush in and the charge flips: an action potential. That change triggers the next stretch of membrane, so the impulse travels down the axon at full strength or not at all. At the axon's end it releases neurotransmitters across the synapse to the next cell.
Classical conditioning pairs two stimuli: after a tone is repeatedly followed by food, the tone alone makes Pavlov's dogs salivate. The response is automatic, a reflex. Operant conditioning links a voluntary behavior to its consequence: behavior followed by reinforcement becomes more likely, and behavior followed by punishment less likely. Ask what comes first: a stimulus before the response, or a consequence after it.
Information you pay attention to enters short-term memory, which holds a handful of items for seconds. Rehearsing it, and especially connecting it to what you already know, encodes it into long-term memory, a process in which the hippocampus plays a central part. Each time a memory is retrieved it gets stronger, which is why practice testing and spaced review work better than rereading.
The ones marked 3D become a model you can turn, step through and tap.
Every claim is checked before anything is drawn, and every video lists its sources. See plans