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Kengo Maeda1

  • 1Department of Neurology, National Hospital Organization Higashi-ohmi General Medical Center, Higashi-ohmi, Shiga, Japan.

Journal of Stroke and Cerebrovascular Diseases : the Official Journal of National Stroke Association
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PubMed
Summary
This summary is machine-generated.

A rare visual disorder, akinetopsia, caused a driver to perceive a parked car as moving, leading to a traffic accident. This case highlights the critical role of the MT/V5 area in motion perception.

Keywords:
AkinetopsiaInfarctionKinetopsiaMT/V5 areaOptic flow

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Area of Science:

  • Neuroscience
  • Ophthalmology
  • Neurology

Background:

  • Akinetopsia, a rare visual disorder, impairs motion perception.
  • It is typically associated with dysfunction in the MT/V5 area of the occipitoparietal region.
  • Two forms exist: cinematographic vision and invisibility of moving objects.

Observation:

  • A 54-year-old male driver experienced a collision with a parked car.
  • He reported the parked car appeared to move forward, preventing him from stopping.
  • This symptom occurred during driving, termed cinematographic vision.

Findings:

  • Magnetic resonance imaging revealed a recent infarction in the right temporoparietal region.
  • The infarction involved the MT/V5 area, correlating with the patient's visual deficit.
  • The cinematographic vision experienced by the patient was identified as the cause of the traffic accident.

Implications:

  • This case underscores the MT/V5 area's crucial role in processing visual motion.
  • Akinetopsia can lead to illusory perception, posing risks in real-world scenarios like driving.
  • Understanding akinetopsia is vital for diagnosing and managing visual processing disorders.