On these “Gold Standard Step 1 Facts” pages you will find Free:
- USMLE Audio Review files from our “Gold Standard USMLE Reviews”
- Transcriptions of those files
- And videos (as they become available)
The idea is that you can review for the USMLE online by:
- Listening to the Audio
- Following along with the transcription
- Or by watching the video (if available)
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Let’s start our USMLE Review with Anatomy from the Gold Standard USMLE Step 1 Audio Review program.
Play USMLE Audio MP3 25 13 Associated Cortical Lesions Below
Begin 25 13 Associated Cortical Lesions Transcription
Now we’ll look at associated cortical lesions.
Student doctor, what would be the result of a lesion to the primary somatosensory area, this would include area 3, 1, and 2 on your illustration.
A lesion to the primary somatosensory area would result in contralateral loss of tactile discrimination with hypoesthesia and astereognosis.
Now, what is hypoesthesia?
- Hypoesthesia refers to a diminished sensitivity to stimulation.
And, what is astereognosis?
- Astereognosis is the inability to recognize objects by touch.
What would be the result of a lesion to the superior parietal lobule?
- This are areas 5 and 7 in your illustration. Contralateral loss of tactile discrimination, stereognosis, and statognosis.
Please paraphrase this with the right lobe lesion. If the right lobe is affected, there is neglect of events in the contralateral portion of the external world.
****END OF TRANSCRIPTION****
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