AKINETOPSIA CASE STUDY

LM described pouring a cup of tea or coffee difficult “because the fluid appeared to be frozen, like a glacier”. We describe a patient who showed akinetopsia as epileptic seizures. Although the patient underwent reexamination for AVM at our hospital, the nidus was obstructed completely. Although radiotherapy was performed to the AVM at our hospital, it did not result in the complete obstruction of the nidus. Akinetopsia, Epilepsy, Epileptic seizures.

Akinetopsia, Epilepsy, Epileptic seizures. On several behavioural tests, TD showed a specific and selective impairment of motion perception that was comparable to LM’s performance. In , a year-old man complained of the inability to perceive visual motion following a traumatic brain injury, two years prior, in which a large cedar light pole fell and struck his head. Inconspicuous akinetopsia can be triggered by high doses of certain antidepressants [12] with vision returning to normal once the dosage is reduced. This symptom appeared subsequent to being aware of a bad feeling and lasted for several seconds. Although TD had some impairments of lower visual functions, these could not explain the problems she experienced with regard to motion perception.

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In her peripheral visual field, the patient was never able to detect any direction of movement. InGoldstein and Gelb reported a year-old male who suffered a gunshot wound in the posterior brain.

The topographical disorientation, simultagnosia in the Cookie Theft picture task and constructional disability were unchanged. He could state the new position of the object left, right, up, downbut saw “nothing in between”. In neuropsychological findings, he had left hemispatial neglect, dressing apraxia and anosognosia did not recognise his hemiparesis and hemianopia, even after he had a minor car accident. Ann Neurol ; These areas are separated by their function in vision. He always failed to pour tea into a cup because the fluid vanished.

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LM was to follow the path of a wire mounted onto a board with her right index finger. Evidence from unilateral cerebral brain damage.

Inconspicuous akinetopsia can be triggered by high doses of certain antidepressants [12] with vision returning to normal once the dosage is reduced. Lesions more often cause gross akinetopsia.

Discussion We describe a patient who showed akinetopsia as epileptic seizures.

Case Report: Invisibility of moving objects: a core symptom of motion blindness

Inconspicuous akinetopsia is often described by seeing motion as a cinema reel or a multiple exposure photograph. Only the first reported case by Ziel et al and our patient reported invisibility of moving objects. The blocks could move in cawe directions: He had difficulties driving and following a group conversation. Deficits in global motion perception”.

akinetopsia case study

Cerebral akinetopsia visual motion blindness. TD’s ability to determine the direction of movement was tested using a task in which small grey blocks all moved in the same direction with the same speed against a black background.

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Akinetopsia

He has continued CBZ and has been living since with no symptoms. However, the feeling that the whole view was shaking appeared.

akinetopsia case study

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.

The lesion is visible in the right parietal lobe. LM and other patients have also complained of having trouble following conversations, because lip movements and changing facial expressions were missed. The symptom appeared in the entire visual field.

Our patient showed motion blindness after he got the second, expanded lesions in the right temporoparietal region, which may explain his impairment in the bilateral visual field. The akinetopsic symptom was paroxysmal and recurrent. Cerebral visual motion blindness: Neurol Clin ; Other intact functions include visual space perception and visual identification of shapes, objects, and faces.

akinetopsia case study

Interrim report of JET-2 study. Vaina et al 14 reported that the patients with unilateral lesions involving the anterior temporal or parietal lobes displayed poor motion perception in either visual field. The patient was well-oriented.