Left hand tactile agnosia after posterior callosal lesion

Maddalena Balsamo, Luigi Trojano, Arcangelo Giamundo, Dario Grossi

Research output: Contribution to journalArticlepeer-review


We report a patient with a hemorrhagic lesion encroaching upon the posterior third of the corpus callosum but sparing the splenium. She showed marked difficulties in recognizing objects and shapes perceived through her left hand, while she could appreciate elementary sensorial features of items tactually presented to the same hand flawlessly. This picture, corresponding to classical descriptions of unilateral associative tactile agnosia, was associated with finger agnosia of the left hand. This very unusual case report can be interpreted as an instance of disconnection syndrome, and allows a discussion of mechanisms involved in tactile object recognition.

Original languageEnglish
Pages (from-to)1030-1036
Number of pages7
Issue number8
Publication statusPublished - 2008


  • Corpus callosum
  • Disconnection syndrome
  • Finger agnosia
  • Tactile agnosia
  • Tactile object recognition

ASJC Scopus subject areas

  • Experimental and Cognitive Psychology
  • Neuropsychology and Physiological Psychology
  • Cognitive Neuroscience
  • Neuroscience(all)


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