Clinical Neuroscience Cheat Sheet

The core ideas of Clinical Neuroscience distilled into a single, scannable reference — perfect for review or quick lookup.

PiqCue — piqcue.com/clinical-neuroscience/cheatsheet

Quick Reference

Neuroplasticity

The brain's ability to reorganize its structure, functions, and connections in response to experience, learning, or injury. Neuroplasticity underlies recovery after stroke, adaptation to sensory loss, and the effects of rehabilitation therapies.

Neurotransmission

The process by which signaling molecules (neurotransmitters) are released from a presynaptic neuron, cross the synaptic cleft, and bind to receptors on a postsynaptic neuron to transmit chemical signals throughout the nervous system.

Neurodegeneration

The progressive loss of structure or function of neurons, including neuronal death. Neurodegenerative diseases are characterized by the accumulation of misfolded proteins, mitochondrial dysfunction, oxidative stress, and neuroinflammation.

Blood-Brain Barrier (BBB)

A highly selective semipermeable border of endothelial cells that separates circulating blood from the brain extracellular fluid. It protects the brain from pathogens and toxins but also presents a major challenge for drug delivery to the central nervous system.

Functional Neuroimaging

Brain imaging techniques that measure neural activity by detecting changes in blood flow, metabolism, or electrical activity. Key modalities include functional MRI (fMRI), positron emission tomography (PET), and magnetoencephalography (MEG).

Deep Brain Stimulation (DBS)

A neurosurgical procedure in which electrodes are implanted in specific brain targets to deliver controlled electrical impulses. DBS modulates abnormal neural circuit activity and is used to treat movement disorders, certain psychiatric conditions, and epilepsy.

Electroencephalography (EEG)

A non-invasive electrophysiological monitoring method that records electrical activity of the brain using electrodes placed on the scalp. EEG provides millisecond-level temporal resolution and is essential for diagnosing epilepsy and monitoring brain states.

Neuroinflammation

Inflammation of nervous tissue mediated primarily by microglia and astrocytes. While acute neuroinflammation serves a protective role, chronic neuroinflammation contributes to the pathogenesis of many neurological and psychiatric disorders.

Connectomics

The comprehensive mapping and analysis of neural connections within the brain. Connectomics uses advanced neuroimaging and computational methods to produce detailed maps (connectomes) of structural and functional connectivity at various scales.

Pharmacogenomics in Neurology

The study of how genetic variation influences individual responses to neurological and psychiatric medications. Pharmacogenomic testing can guide drug selection and dosing to maximize efficacy and minimize adverse effects.

Key Terms at a Glance

Action Potential:A rapid, all-or-none electrical signal that propagates along a neuron's axon, initiated by the opening of voltage-gated sodium channels.

Amygdala:An almond-shaped structure in the medial temporal lobe involved in processing emotions, especially fear and threat detection.

Astrocyte:A star-shaped glial cell that supports neurons by regulating the blood-brain barrier, maintaining ion homeostasis, recycling neurotransmitters, and contributing to the glymphatic system.

Axon:The long projection of a neuron that conducts electrical impulses (action potentials) away from the cell body to synaptic terminals.

Biomarker:A measurable indicator of a biological state or condition, used in clinical neuroscience for early diagnosis, prognosis, and monitoring of neurological diseases.

BOLD Signal:Blood-oxygen-level-dependent signal detected by fMRI, reflecting local changes in blood oxygenation that correlate with neural activity.

Cerebellum:A hindbrain structure critical for motor coordination, balance, motor learning, and increasingly recognized for roles in cognition and affect.

Cortex (Cerebral):The outer layer of the cerebrum composed of folded gray matter. Responsible for higher-order functions including perception, language, reasoning, and voluntary movement.

Demyelination:The loss or destruction of the myelin sheath surrounding nerve fibers, impairing signal conduction. Central to diseases such as multiple sclerosis.

Dendrite:A branching extension of a neuron that receives electrochemical signals from other neurons via synapses.

Dopamine:A monoamine neurotransmitter critical for motor control, reward processing, motivation, and executive function. Deficiency in Parkinson's; dysregulation in schizophrenia and addiction.

Epileptogenesis:The process by which a normal brain develops epilepsy, involving molecular, cellular, and network changes that lead to recurrent spontaneous seizures.

GABA (Gamma-Aminobutyric Acid):The primary inhibitory neurotransmitter in the adult brain. GABAergic dysfunction is implicated in epilepsy, anxiety disorders, and insomnia.

Glia:Non-neuronal cells of the nervous system including astrocytes, oligodendrocytes, microglia, and Schwann cells, which support, protect, and maintain neurons.

Glutamate:The principal excitatory neurotransmitter in the central nervous system. Excessive glutamate release can cause excitotoxicity, contributing to neuronal damage in stroke and neurodegeneration.

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