Intact navigation skills after bilateral loss of striate cortex

Beatrice de Gelder, Marco Tamietto, Geert van Boxtel, Rainer Goebel, Arash Sahraie, Jan van den Stock, Bernard M C Stienen, Lawrence Weiskrantz, Alan Pegna

Research output: Contribution to journalArticle

70 Citations (Scopus)

Abstract

A patient with bilateral damage to primary visual (striated) cortex has provided the opportunity to assess just what visual capacities are possible in the absence of geniculo-striate pathways. Patient TN suffered two strokes in succession, lesioning each visual cortex in turn and causing clinical blindness over his whole visual field. Functional and anatomical brain imaging assessments showed that TN completely lacks any functional visual cortex. We report here that, among other retained abilities, he can successfully navigate down the extent of a long corridor in which various barriers were placed. A video recording shows him skillfully avoiding and turning around the blockages. This demonstrates that extra-striate pathways in humans can sustain sophisticated visuo-spatial skills in the absence of perceptual awareness, akin to what has been previously reported in monkeys. It remains to be determined which of the several extra-striate pathways account for TN's intact navigation skills.
Original languageEnglish
Pages (from-to)R1128-R1129
Number of pages2
JournalCurrent Biology
Volume18
Issue number24
Early online date22 Dec 2008
DOIs
Publication statusPublished - 23 Dec 2008

Fingerprint

Video recording
Visual Cortex
Brain
Navigation
Imaging techniques
blindness
stroke
monkeys
Video Recording
cortex
Functional Neuroimaging
Aptitude
image analysis
Blindness
Visual Fields
brain
Haplorhini
Stroke
visual cortex

Keywords

  • blindness
  • humans
  • locomotion
  • magnetic resonance imaging
  • male
  • stroke
  • video recording
  • visual cortex

Cite this

de Gelder, B., Tamietto, M., van Boxtel, G., Goebel, R., Sahraie, A., van den Stock, J., ... Pegna, A. (2008). Intact navigation skills after bilateral loss of striate cortex. Current Biology, 18(24), R1128-R1129. https://doi.org/10.1016/j.cub.2008.11.002

Intact navigation skills after bilateral loss of striate cortex. / de Gelder, Beatrice; Tamietto, Marco; van Boxtel, Geert; Goebel, Rainer; Sahraie, Arash; van den Stock, Jan; Stienen, Bernard M C; Weiskrantz, Lawrence; Pegna, Alan.

In: Current Biology, Vol. 18, No. 24, 23.12.2008, p. R1128-R1129.

Research output: Contribution to journalArticle

de Gelder, B, Tamietto, M, van Boxtel, G, Goebel, R, Sahraie, A, van den Stock, J, Stienen, BMC, Weiskrantz, L & Pegna, A 2008, 'Intact navigation skills after bilateral loss of striate cortex' Current Biology, vol. 18, no. 24, pp. R1128-R1129. https://doi.org/10.1016/j.cub.2008.11.002
de Gelder B, Tamietto M, van Boxtel G, Goebel R, Sahraie A, van den Stock J et al. Intact navigation skills after bilateral loss of striate cortex. Current Biology. 2008 Dec 23;18(24):R1128-R1129. https://doi.org/10.1016/j.cub.2008.11.002
de Gelder, Beatrice ; Tamietto, Marco ; van Boxtel, Geert ; Goebel, Rainer ; Sahraie, Arash ; van den Stock, Jan ; Stienen, Bernard M C ; Weiskrantz, Lawrence ; Pegna, Alan. / Intact navigation skills after bilateral loss of striate cortex. In: Current Biology. 2008 ; Vol. 18, No. 24. pp. R1128-R1129.
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