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Visual agnosia is a condition characterized by the inability to recognize visually presented objects despite having normal vision. For instance, a person with visual agnosia can describe the shape and color of an object but cannot identify or name it. This impairment does not affect their visual field, acuity, color vision, brightness discrimination, language, or memory. An example of this condition in a social setting is someone at a dinner party asking for "that silver thing with a round end"...
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Related Experiment Video

Updated: Jun 20, 2026

Utilizing Repetitive Transcranial Magnetic Stimulation to Improve Language Function in Stroke Patients with Chronic Non-fluent Aphasia
10:15

Utilizing Repetitive Transcranial Magnetic Stimulation to Improve Language Function in Stroke Patients with Chronic Non-fluent Aphasia

Published on: July 2, 2013

[Chronic progressive aphasia].

J Diehl-Schmid1, C Knels, A Danek

  • 1Klinik und Poliklinik für Psychiatrie und Psychotherapie, Zentrum für Kognitive Störungen, Technische Universität, Ismaninger Strasse 22, Munich, Germany. janine.schmid@lrz.tum.de

Der Nervenarzt
|August 26, 2009
PubMed
Summary
This summary is machine-generated.

Progressive aphasia (PA), a rare neurodegenerative condition, presents diagnostic challenges. Recent research explores feasible and effective treatments for PA, a neglected area compared to stroke-induced aphasia.

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Neuronavigation-guided Repetitive Transcranial Magnetic Stimulation for Aphasia
08:48

Neuronavigation-guided Repetitive Transcranial Magnetic Stimulation for Aphasia

Published on: May 6, 2016

Related Experiment Videos

Last Updated: Jun 20, 2026

Utilizing Repetitive Transcranial Magnetic Stimulation to Improve Language Function in Stroke Patients with Chronic Non-fluent Aphasia
10:15

Utilizing Repetitive Transcranial Magnetic Stimulation to Improve Language Function in Stroke Patients with Chronic Non-fluent Aphasia

Published on: July 2, 2013

Neuronavigation-guided Repetitive Transcranial Magnetic Stimulation for Aphasia
08:48

Neuronavigation-guided Repetitive Transcranial Magnetic Stimulation for Aphasia

Published on: May 6, 2016

Area of Science:

  • Neurodegenerative diseases
  • Neurology
  • Linguistics

Context:

  • Progressive aphasia (PA) is less common than stroke-related aphasia.
  • PA subtypes include progressive non-fluent aphasia, semantic dementia, and logopenic aphasia.
  • Diagnosis relies on language assessment and neuroimaging.

Purpose:

  • To review the current understanding of progressive aphasias.
  • To highlight the diagnostic approaches for differentiating PA subtypes.
  • To discuss the neglected therapeutic landscape of PA and recent advancements.

Summary:

  • Progressive aphasias stem from neurodegenerative diseases and are classified into distinct clinical subtypes.
  • Accurate diagnosis requires comprehensive language evaluation and neuroimaging.
  • While historically neglected, therapeutic strategies for PA are now being investigated for their efficacy.

Impact:

  • Improves understanding of rare neurodegenerative language disorders.
  • Guides clinical diagnosis and management of progressive aphasia.
  • Highlights the need for and emerging options in PA treatment research.