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Biopsychology

What drives thought, emotion, and action? This book looks beneath the surface, tracing behavior to the biological roots of the brain and nervous system.

Brain

Amygdala

Definition The amygdala is a small, almond-shaped structure located deep within the brain. It pla...

Brainstem

Definition The brainstem is the lower part of the brain that connects it to the spinal cord. It p...

Cerebellum

Definition The cerebellum is a part of the brain located at the back of the head, below the cereb...

Cerebral Cortex

Definition The cerebral cortex is the outer layer of the brain, often referred to as the "gray ma...

Corpus Callosum

Definition The corpus callosum is a large band of nerve fibers in the brain that connects the two...

Frontal Lobe

Definition The frontal lobe is one of the four main regions of the brain and is located at the fr...

Hindbrain

Definition The hindbrain is a region at the base of the brain responsible for controlling vital l...

Hippocampus

Definition The hippocampus is a small, curved structure located in the medial temporal lobe of th...

Hypothalamus

Definition The hypothalamus is a small region located at the base of the brain, just above the pi...

Lateralization

Definition Lateralization refers to how different tasks or functions are divided between the left...

Limbic System

Definition The limbic system is a group of interconnected brain structures that play a crucial ro...

Medulla Oblongata

Definition The medulla oblongata, often referred to simply as the medulla, is a part of the brain...

Motor Cortex

Definition The motor cortex is a region of the brain located in the frontal lobe that plays a cru...

Occipital Lobe

Definition The occipital lobe is one of the four main regions of the brain, located at the back o...

Parietal Lobe

Definition The parietal lobe is one of the four main regions of the brain, situated at the top an...

Pons

Definition The pons is a region in the brainstem, located between the medulla oblongata and the m...

Prefrontal Cortex

Definition The prefrontal cortex (PFC) is the front part of the brain's frontal lobe, located jus...

Reticular Formation

Definition The reticular formation is a network of nerve cells and fibers located in the brainste...

Somatosensory Cortex

Definition The somatosensory cortex is a region of the brain located in the parietal lobe that pl...

Substantia Nigra

Definition The substantia nigra is a region within the midbrain, specifically located at the base...

Suprachiasmatic Nucleus

Definition The suprachiasmatic nucleus (SCN) is a small region in the brain located just above th...

Temporal Lobe

Definition The temporal lobe is a region of the brain located on each side of the cortex, near th...

Thalamus

Definition The thalamus is a crucial part of the brain located deep within the center, near the t...

Ventral Tegmental Area

Definition The ventral tegmental area (VTA) is a region located in the midbrain that plays a key ...

Endocrine System

Genetics

Nervous System

Neurons and Neurotransmitters

Acetylcholine

Definition Acetylcholine (ACh) is a neurotransmitter, which is a chemical messenger that helps tr...

Action Potential

Definition An action potential is a rapid electrical impulse that travels along the membrane of a...

Adrenaline

Definition Adrenaline, also known as epinephrine, is a hormone and neurotransmitter produced by t...

All-or-Nothing Response

Definition The all-or-none response refers to how neurons (nerve cells) work: when a neuron recei...

Axon

Definition An axon is a long, slender projection of a nerve cell (neuron) that carries electrical...

Dendrites

Definition Dendrites are tree-like extensions of neurons, which serve as the input regions where ...

Dopamine

Definition Dopamine is a neurotransmitter, which is a type of chemical in the brain that helps tr...

Endorphins

Definition Endorphins are natural chemicals produced in your brain that act as your body’s way of...

Gamma-aminobutyric acid (GABA)

Definition Gamma-aminobutyric acid (GABA) is a neurotransmitter, which means it's a chemical that...

Glial Cells

Definition Glial cells are specialized non-neuronal cells found in the nervous system that play a...

Glutamate

Definition Glutamate is a type of amino acid that plays a crucial role in the human body, particu...

Melatonin

Definition Melatonin is a hormone produced by the pineal gland in the brain. It plays a key role ...

Neuron

Definition A neuron is a specialized cell in the nervous system that transmits information throug...

Neurotransmitter

Definition A neurotransmitter is a chemical messenger in the brain that allows neurons (specializ...

Reuptake

Definition Reuptake is a process in the brain where neurotransmitters—chemicals that transmit sig...

Serotonin

Definition Serotonin is a chemical compound in the body that acts as a neurotransmitter, meaning ...

Synapse

Definition A synapse is a tiny gap between neurons where communication occurs through chemical me...

Mirror Neurons

Definition Mirror neurons are specialized brain cells that activate both when an individual perfo...