Using "blind-spots" to locate brain damage

Damage to the primary visual cortex leads to a loss of vision in a very specific region of the visual field. Before brain scanners, the 'blind spot' of a brain damaged patient would give a doctor a very good idea of the extent and location of a brain lesion (caused, say, by a stroke).

Scotoma

A diagram of the brain with area of a scotoma highlighted An image showing the area of blindness caused by a scotoma

Quadrantanopia

A diagram of the brain with area of a quadrantanopia highlighted An image showing the area of blindness caused by a quadrantanopia

Hemianopia

A diagram of the brain with area of a hemianopia highlighted An image showing the area of blindness caused by a hemianopia

Latest news - lectures

  • Future engagement: 9-12 July 2018
    Lecture: The Neurobiology of Beauty at the Franklin-Wilkins Building, King's College London as part of the XII International Symposium of Functional Neuroreceptor Mapping of the Living Brain
  • Future engagement: 15-16 November 2018
    Lecture: The Neurobiology of Beauty as part of the Fresco Conference on Synaptic Plasticity, Florence, Italy
  • Future engagement: 7 December 2018
    Lecture: The Neurobiology of Aesthetic Experiences and Judgement at the Salpetriere Hospital, Paris for the French Society of Neurology
  • Future engagement: 8-14 April 2019
    Semir Zeki will give a public lecture at the National Geographic Science Festival in Rome (April 8-14, 2019). The Festival will coincide with the 500th anniversary of the death of Leonardo Da Vinci and the 50th anniversary of landing on the moon. Exact title, date and venue to be announced.

Latest news - publications

  • Recently appeared: The Rough Seas of Cortical Cartography by Semir Zeki is now available in Trends in Neurosciences
  • Recently appeared: The Bayesian-Laplacian Brain Semir Zeki, Oliver Y. Chèn bioRXiv
  • Recently appeared: Imaging the passionate stage of romantic love by dopamine dynamics by Kayo Takahashi, Kei Mizuno, Akihiro T Sasaki, Yasuhiro Wada, Masaaki Tanaka, Akira Ishii, Kanakao Tajima, Naohiro Tsuyuguchi, Kyosuke Watanabe, Semir Zeki and Yasuyoshi Watanabe is now available in Frontiers in Human Neuroscience
  • Recently appeared: A special issue of The Philosophical Transactions of the Royal Society, edited by Semir Zeki, to commemorate the 350th anniversary of the birth of this, the first peer-reviewed journal, is now online. It is entitled "Cerebral Cartography: a vision of its future" and contains, among other articles, ones giving detailed descriptions of the American, European and Japanese brain initiative programmes.
  • Now available: Semir Zeki's first book, A Vision of the Brain, can be downloaded here.
  • Now available: Splendors and Miseries of the Brain is now available in Greek and Polish (also available in Spanish, Italian and German).
  • Now available: Inner Vision by Semir Zeki.