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Single-pulse transcranial magnetic stimulation reveals contribution of premotor cortex to object shape recognition

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  • Sebo Uithol, Universitá degli Studi di Parma, Germany
  • Michele Franca, Universitá degli Studi di Parma, Italy
  • Katrin Heimann
  • Daniele Marzoli, University of Chieti, Chieti, Italy
  • Paolo Capotosto, University of Chieti-Pescara, Italy
  • Luca Tommasi
  • ,
  • Vittorio Gallese, Universitá degli Studi di Parma, Italy
Background: It is known that ventral premotor cortex responds selectively to the visual perception of object shapes. However, it is unclear whether this activation also contributes to visual processing. Objective: In this study we want to assess whether activation in premotor areas contributes to visual perception of objects.
Methods: We measure performance on a perception task while delivering single pulse transcranial magnetic stimulation (TMS) to the left premotor cortex at different latencies after stimulus onset. Results: We show that in cases of limited visual consciousness, disturbing the left premotor cortex 150 ms after stimulus onset results in a decrease in the capacity to recognize shapes, compared both to other latencies and to stimulation of the vertex. Conclusion: Premotor cortex plays a constitutive role in object shape recognition.
Original languageEnglish
JournalBrain Stimulation
Pages (from-to)953-956
Number of pages4
Publication statusPublished - 7 May 2015
Externally publishedYes

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