Abstract
Akinetopsia is a rare syndrome in which a patient specifically loses the ability to perceive visual motion following bilateral cortical lesions outside the striate cortex. We describe a patient who showed akinetopsia recurrently as epileptic seizures.The patient was a 61-year-old man. At age 46, a cerebral arteriovenous malformation in the right parietal lobe was discovered. At age 58, he began to have a recurrent visual symptom by which smooth movements of objects suddenly appeared, resembling freeze frames in a motion picture. This symptom was paroxysmal and recurrent. Both EEG and magnetoencephalography showed repetitive right temporal spikes. We diagnosed his visual symptom as akinetopsia, which was aroused by hyperexcitability of the right temporal and parietal cortices, including area MT/V5. We administered carbamazepine 200 mg/day, which suppressed his akinetopsic symptom completely.
Highlights
Akinetopsia is a rare syndrome in which a patient loses the ability to perceive visual motion following bilateral cortical lesions outside the striate cortex [1].Patients with akinetopsia say that smooth movements of objects appear as a discontinuous freeze frame image [2]
We diagnosed his visual symptom as akinetopsia, which was aroused by the hyperexcitability of the right temporal and parietal cortices, including area MT/V5
We describe a patient who showed akinetopsia as epileptic seizures
Summary
Article history: Received 10 April 2013 Received in revised form 23 April 2013 Accepted 25 April 2013 Available online 20 May 2013. At age 58, he began to have a recurrent visual symptom by which smooth movements of objects suddenly appeared, resembling freeze frames in a motion picture. Both EEG and magnetoencephalography showed repetitive right temporal spikes. We diagnosed his visual symptom as akinetopsia, which was aroused by hyperexcitability of the right temporal and parietal cortices, including area MT/ V5. We administered carbamazepine 200 mg/day, which suppressed his akinetopsic symptom completely
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