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Subjective visual symptoms and electroencephalographic analysis before and after removal of occipital falx meningioma
- Source :
- Electroencephalography and Clinical Neurophysiology. 49:162-167
- Publication Year :
- 1980
- Publisher :
- Elsevier BV, 1980.
-
Abstract
- A 41-year-old patient underwent surgery for the partial removal of a posterior falx meningioma, which invaded deeply into both occipital lobes. After surgery, the patient complained of marked metamorphopsia, colored photopsia, afterimage and loss of stereopsia. The relationships between these symptoms and features of the VEP and EEG power spectra (both under resting and photic driving conditions) were investigated. Marked photopsia on the 4th postoperative day was accompanied by EEG features indicating asynchronous excitation of injured cortical cells, while the presence of a strong afterimage on days 17 through 24 coincided with indications of an apparent refractoriness in cortical activation.
- Subjects :
- Adult
medicine.medical_specialty
Refractory period
Photopsia
Electroencephalography
Meningioma
Ophthalmology
Meningeal Neoplasms
medicine
Humans
Metamorphopsia
Vision, Ocular
medicine.diagnostic_test
Brain Neoplasms
General Neuroscience
Eeg power spectra
Visual symptoms
medicine.disease
Afterimage
Anesthesia
Female
Occipital Lobe
Neurology (clinical)
medicine.symptom
Psychology
Subjects
Details
- ISSN :
- 00134694
- Volume :
- 49
- Database :
- OpenAIRE
- Journal :
- Electroencephalography and Clinical Neurophysiology
- Accession number :
- edsair.doi.dedup.....12be041ca0e9cad5052674960cda590d