Reach Us +44-1477412632
All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Abstract

Peduncular-like Hallucinosis in the Absence of Midbrain or Thalamic Damage

An 87 year-old man was admitted for Peduncular hallucinosis (PH) characterized by acute vivid, continuous, complex visual and auditory hallucinations, which were triggered by fixation on a blank wall. The MRI revealed a subacute left parietal stroke. The symptoms disappeared after six weeks. An fMRI experiment, using periods of visual stimulation (checkerboard, VS) alternating with a hallucinosis-inducing condition (blank screen, PH) revealed that PH relative to VS elicited a complex pattern of activation involving the posterior cingulate cortex, the SMA, the left superior temporal gyrus and inferior parietal lobule. This is, to our knowledge, the first observation which indicated that PH-like could occur following cortical lesions. Moreover, fMRI results suggested that the internally-generated vivid and complex scenes in the patient’s brain were subtended by large associative neural networks that did not necessarily implicate the midbrain.


Author(s):

André Zacharia, Asaid Khateb and Jean-Marie Annoni



Abstract | Full-Text | PDF

Share this  Facebook  Twitter  LinkedIn  Google+
Flyer image

Abstracted/Indexed in

  • Index Copernicus
  • Google Scholar
  • China National Knowledge Infrastructure (CNKI)
  • Directory of Research Journal Indexing (DRJI)
  • WorldCat
  • Geneva Foundation for Medical Education and Research
  • Secret Search Engine Labs