Foundations of Clinical Neuropsychology: Brain-Behavior Relationships, Neuroanatomy, and Neuropathology
Core concepts to master
A candidate must be able to move fluidly between structure and function: cortical zones (primary, secondary, tertiary association cortex), the lateralization of language and visuospatial skills, the organization of white-matter tracts (arcuate fasciculus, corpus callosum, cingulum), and the vascular territories that produce predictable lesion syndromes (MCA, ACA, PCA, basilar). Know the classic disconnection and cortical syndromes - conduction aphasia, Gerstmann syndrome, Balint syndrome, alien hand, callosal apraxia - and the anatomy that generates them.
Neuropathology questions reward a mechanistic model: ischemic versus hemorrhagic stroke, the difference between cytotoxic and vasogenic edema, demyelinating disease, neurodegenerative proteinopathies (tau, amyloid, alpha-synuclein, TDP-43), and the effects of mass, herniation, and hydrocephalus on cognition. Understand that lesion location, acuity, and premorbid reserve jointly determine the clinical picture.
Traps
Questions often exploit the difference between a deficit of a function and a deficit of access (e.g., aphasia vs. apraxia vs. agnosia). Another common trap is assuming a single lesion explains all findings when a diffuse process (hypoxic injury, white-matter disease) is more parsimonious. Beware lateralization shortcuts - handedness does not guarantee left-hemisphere language dominance.
Rule of thumb
Localize first, then characterize: ask where (focal vs. diffuse), when (acute vs. insidious), and what system (cortical, subcortical, white matter). A sudden focal deficit suggests vascular; a slowly progressive asymmetric cortical syndrome suggests neurodegeneration.
Worked example: A patient with fluent speech, poor repetition, and relatively preserved comprehension points to conduction aphasia from a lesion of the arcuate fasciculus - not Wernicke aphasia, which impairs comprehension.