Biopsychology

Exam 1 Psychology

Action Potential

An electrical impulse that occurs when sodium (Na) ions rush into the neuron and potassium (K) ions rush out.

Synaptic Communication

The process by which a sending neuron transmits neurotransmitters through the axon, which are then captured by the dendrites of a receiving neuron.

Reuptake

The process by which a neuron reabsorbs neurotransmitters that are stuck in the synapse.

SSRI

Selective Serotonin Reuptake Inhibitors, a class of drugs that increase serotonin levels by inhibiting its reuptake in the brain.

Synaptic Cleft

The fluid-filled space between the sending and receiving neurons, not an open space.

Serotonin

A neurotransmitter that regulates mood and sleep; excessive levels can lead to mood swings and manic phases in bipolar disorder.

Dopamine

A neurotransmitter associated with pleasure and reward; excessive intake is linked to schizophrenia and hallucinations.

Acetylcholine

A neurotransmitter involved in muscle movement, which is affected in conditions like Parkinson's disease.

Triune Brain Concept

The theory that the human brain evolved in three parts, but functions as a single integrated network.

Neural Pruning

The process by which the brain eliminates unnecessary connections, refining its structure and function over time.