Visuospatial Dysfunction in Brain-damaged Patients

DOI Web Site
  • Suzuki Kyoko
    Department of Behavioral Neurology and Cognitive Neuroscience, Tohoku University Graduate School of Medicine

Bibliographic Information

Other Title
  • 脳損傷からみたヒトの視・空間認知機能のしくみ
  • 教育講演 脳損傷からみたヒトの視・空間認知機能のしくみ
  • キョウイク コウエン ノウ ソンショウ カラ ミタ ヒト ノ ミ ・ クウカン ニンチ キノウ ノ シクミ

Search this article

Description

<p>Two cortical visual streams separately process visual information;the ventral stream, projecting from the striate cortex to infero-temporal cortex, and the dorsal stream, projecting from the striate cortex to posterior parietal cortex. The ventral stream subserves long-term information for object identification, such as shape, colour and texture, while the dorsal stream subserves visuo-motor functions.　Although two visual streams collaborate with each other, dysfunction in a visual stream results in symptoms specific to the stream.</p><p>Patients with lesions in the ventral stream may develop dysfunctions in recognizing shapes, colors and texture through vision, which are independently processed with each other. Patients with lesions in the dorsal stream would show dysfunctions in reaching and manipulating objects, which may result in simultanagnosia or problems in tool-use. Close observation of symptoms in brain-damaged patients would uncover the network related to visual input and semantics/action. Understanding the basic mechanism underlying visuospatial symptoms will support a tailored rehabilitation of each patient. </p>

Journal

Keywords

Details 詳細情報について

Report a problem

Back to top