Neurology UK Medical PG Flashcards - Medical Study Cards
Master Neurology with OnCourse flashcards. These spaced repetition flashcards are designed for medical students preparing for NEET PG, USMLE Step 1, USMLE Step 2, MBBS exams, and other medical licensing examinations.
Neurology Flashcard Deck - 10 Cards
Flashcard 311: Visual images perceived in the temporal hemifield will stimulate cells on the _____ half of the ipsilateral retina (and vice versa)
Answer: nasal
Flashcard 312: Contralateral homonymous inferior quadrantanopia is a visual field defect associated with a lesion to the _____ lobe
Answer: parietal
Flashcard 313: What visual field defect results from an infarct to the PCA artery affecting the primary visual cortex?
_____
Answer: Contralateral homonymous hemianopia with macular sparing
Flashcard 314: Monocular anopia is a visual field defect associated with a complete lesion to the _____
Answer: optic nerve
Flashcard 315: A lesion in the **right visual cortex** (e.g., PCA stroke) typically results in what visual field defect? \n\n_____
Answer: Left contralateral homonymous hemianopia with macular sparing
Extra: Macular sparing in PCA strokes occurs because the macula receives dual blood supply from both the Posterior Cerebral Artery (PCA) and the Middle Cerebral Artery (MCA).
Flashcard 316: Bitemporal hemianopia is a visual field defect associated with a lesion to the _____
Answer: optic chiasm
Flashcard 317: What visual field defect results from a lesion of the temporal lobe (e.g. MCA infarct)?
_____
Answer: Contralateral homonymous superior quadrantanopia
Flashcard 318: A lesion in the **Meyer's loop** (temporal lobe) results in which visual field defect?\n\nAnswer: _____
Answer: Contralateral homonymous superior quadrantanopia
Extra: Mnemonic: **M**eyer's loop = **T**emporal lobe = **S**uperior defect (\"Pie in the sky\").\n**P**arietal lobe (Baum's loop) = **I**nferior defect (\"Pie on the floor\").
Flashcard 319: Contralateral homonymous hemianopia with macular sparing is a visual field defect associated with _____ artery infarct
Answer: posterior cerebral
Flashcard 320: A visual field defect characterized by a loss of vision in the center of the visual field, often seen in optic neuritis or macular degeneration, is a _____.
Answer: central scotoma
Extra: A central scotoma involves the fixation point and is caused by damage to the macula or the papillomacular bundle (e.g., in optic neuritis). In contrast, a paracentral scotoma is located near, but not involving, the fixed point.
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