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nbme24/Block 4/Question#48 (50.0 difficulty score)
A 55-year-old woman is brought to the ...
Posterior cerebralπŸ”
tags: neurology 

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submitted by lsmarshall(415),
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CPA troesk anc scuae "anagposioprso" whchi is het iaintilby to ncgorziee iirafalm fasec. suCaed yb rllaibtea nislsoe fo isuavl oiaonscasti aaesr, cwhih are tesiadut ni het ifienrro ooitrcitplceoapm torecx f(ufsromi ) eTh ilybati to nmae rastp of eht eacf .g.,(e es,no htu)om ro idftiyen vlsiadiuind yb hetro eusc g.,(.e tglcho,ni iecvso) si felt

uittWho gonnikw ,htat erbinmegerm oaciiptcl lobe is nelodvvi ni i'salvu t'fusf yrbdalo, gudilnicn imgea csgpieonsr nad isth neatipt is vgaihn uessis wiht udndgniretsna gsmeai hlosdu eb ougenh ot etg ot het .swaern

gonyyong  Lol I guessed it exactly because of that +4  
sympathetikey  Never heard of that one before. Thanks! +1  
karthvee  This is not prosopagnosia, but instead a case of apperceptive agnosia. Wiki: "...patients are more effective at naming two attributes from a single object than they are able to name one attribute on each of the two superimposed objects. In addition they are still able to describe objects in detail and recognize objects by touch." Although, lesions tend to be in the occipito-parietal area so PCA again is the answer! +3  
misterdoctor69  I actually think it's both prosopagnosia AND apperceptive agnosia. She is neither able to recognize her mother's FACE nor is she able to recognize objects w/o the help of other senses (apperceptive agnosia) +  
nifty95  Yea couldn't remember the exact name but I just thought of three pathways (visual, somatosensation, and auditory) all converging somewhere/processor (probably somewhere in the temporal lobe...hippocampus?). Beyond the point, the pathways converge to an area which culminates in recognition. Cut off one of the routes (in this case visual), the other two will still work. How is visual cut off? By the PCA not supplying the area leading to neuronal death resulting in varying loss of visual function depending on the area in the occipital lobe. +1  

submitted by poisonivy(31),
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per WrUldo Id 221:7

ACP seluppsi NC III and ,VI umth,sala amldie pmreaolt lb,eo plusenim of eht osurcp mluas,col cmaahlpiparpoap y,sgur mfifusor gs,ruy dna cclipoati b.loe

eedsBis eth rrlaoaatenltc eainiopham itwh aamrucl a PCA tresko nca cueas rcnrtoltlaaae eptrhssaeais dan suoemnib(lnvmeetsnvn of ratelal aaumh,)lts eays,dixl avsiul snagaio dimipare( asvuil nonieorcgti fo c)ejsobt nad rgsppoosaaino i(lnitbiay ot ecgzeniro )cesaf

submitted by sweetmed(144),
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PCA koe:tsr alsuVi sAgnaoi n[ac es,e tbu ton reieznogc ]etjcbso dna ctno,ailuHinlas neralttarolaC oienaimaph wtih camrula a,spnirg xealiA tiotuwh hrpia[aiagf nmtndiao emesihehrep dliv.v]eon

submitted by futuredoc(11),
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oiLnses of eth lropaTme :ebLo

irSuoerp rtoelpma gsryu: ouAcstci nsogaia tat(npei onnact etetdirfifean wentebe dns)osu eidMdl lapretmo ryusg: veMetmno gonsiaa antt(epi tcaonn itterafnfeide enetweb eht vgomni nad tyoisraant oebj)tc reiIofnr etmrolpa ygurs: slpeupdi by P.1AC osooainsrPgap iainyiblt( ot dentifyi hte scfe)a . 2 hmrapAscoiota ss(ol fo corol seiaonsnt dan reeytgnvih saaerpp yrag ot )hmet