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

Motion and shape perception in cerebral akinetopsia

M Rizzo1, M Nawrot, J Zihl

  • 1Department of Neurology, University of Iowa College of Medicine, Iowa City, USA.

Brain : a Journal of Neurology
|October 1, 1995
PubMed
Summary

Akinetopsia, a motion perception deficit, impacts more than just movement detection. Visual association cortex damage impairs processing of various visual cues, even non-motion ones, when noise is present.

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

Polished but pointless? Assessing the potential of gold and silver-alloy IUDs versus copper-only devices in a large multinational cohort (EURAS-LCS12).

The European journal of contraception & reproductive health care : the official journal of the European Society of Contraception·2026
Same author

Case Report: Spontaneous pneumomediastinum in a patient with MDA5-positive dermatomyositis and severe pulmonary fibrosis.

Frontiers in medicine·2025
Same author

Longitudinal validation of the PROFFIT questionnaire to assess financial toxicity in cancer patients.

Journal of cancer policy·2025
Same author

Preliminary insights on the daily rhythm of CRP and IL-6 in athletic horses.

Journal of equine veterinary science·2025
Same author

The genomic landscape of metastatic clear-cell renal cell carcinoma and its prognostic value: a comprehensive analysis of a large real-world clinico-genomic database.

ESMO open·2025
Same author

Marked blastomere herniation is the only post-thaw morphological characteristic associated with a reduced pregnancy rate for in vitro produced equine blastocysts.

Theriogenology·2025

Area of Science:

  • Neuroscience
  • Visual Perception
  • Cognitive Psychology

Background:

  • Akinetopsia is a rare visual disorder characterized by the inability to perceive motion.
  • It results from lesions in specific brain areas, typically within the visual cortex.
  • Understanding the full scope of akinetopsia is crucial for comprehending visual processing.

Observation:

  • Subject L.M. with bilateral dorsolateral visual association cortex lesions was studied.
  • L.M. exhibited deficits in global coherent motion and direction discrimination, especially with background noise.
  • Performance on Ternus displays indicated impaired long-range apparent motion perception.

Findings:

  • L.M. could perceive 2-D shape and 3-D structure-from-motion (SFM), but these failed with noise.
  • Surprisingly, L.M. also struggled with 2-D shape perception using non-motion cues like transients and disparity.
  • These results suggest a broader role for the visual association cortex in salience extraction.

Implications:

  • The visual association cortex is vital for extracting meaningful visual information from noisy environments.
  • Damage to this area has widespread effects on visual perception beyond motion processing.
  • This research deepens our understanding of how the brain constructs visual reality.

Related Experiment Videos