Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Developmental dyslexia: passive visual stimulation provides no evidence for a magnocellular processing defect

S Johannes1, C L Kussmaul, T F Münte

  • 1Department of Neurology, Medical School of Hannover, Germany. johannes@vm.mhrz.mh-hannover.de

Neuropsychologia
|November 1, 1996
PubMed
Summary

This study investigated the magnocellular visual processing stream in developmental dyslexia. Findings did not support a magnocellular deficit in individuals with dyslexia.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Perceptual Expertise and Attention: An Exploration using Deep Neural Networks.

bioRxiv : the preprint server for biology·2024
Same author

Considerations for the Identification and Conveyance of Clinical Pathology Findings in Preclinical Toxicity Studies: Results From the 9th ESTP International Expert Workshop.

Toxicologic pathology·2024
Same author

Changes in attentional resources during the acquisition of laparoscopic surgical skills.

BJS open·2021
Same author

Brain stimulation in obesity.

International journal of obesity (2005)·2017
Same author

Striatal dysfunction in X-linked dystonia-parkinsonism is associated with disease progression.

European journal of neurology·2017
Same author

Mild Thyrotoxicosis Leads to Brain Perfusion Changes: An Arterial Spin Labelling Study.

Journal of neuroendocrinology·2016

Area of Science:

  • Neuroscience
  • Cognitive Science
  • Ophthalmology

Background:

  • Previous research suggested a magnocellular visual processing deficit in developmental dyslexia.
  • This theory proposed that visual processing anomalies contribute to reading difficulties.

Purpose of the Study:

  • To replicate findings suggesting a magnocellular visual processing deficit in developmental dyslexia.
  • To investigate the role of the magnocellular pathway in dyslexia using electrophysiological measures.

Main Methods:

  • Utilized transient and steady-state Visual Evoked Potentials (VEPs).
  • Tested adult developmental dyslexics and a control group with checkerboard reversal stimuli.
  • Varied stimulus reversal rates and contrast levels.

Related Experiment Videos

Main Results:

  • No significant differences were observed between dyslexic and control groups.
  • This held true for low-contrast, rapidly reversing patterns across tested conditions.
  • No magnocellular processing differences were detected based on stimulus rate or contrast.

Conclusions:

  • The current findings do not support a magnocellular processing deficit in developmental dyslexia.
  • The results challenge previous evidence linking magnocellular dysfunction to dyslexia.
  • Further research may be needed to explore other potential visual processing anomalies in dyslexia.