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ref: Gilletti-2006.09 tags: electrode micromotion histology GFAP variable reluctance date: 01-04-2013 02:28 gmt revision:2 [1] [0] [head]

PMID-16921202[0] Brain micromotion around implants in the rodent somatosensory cortex.

  • Used a differential variable reluctance transducer (DVRT) in adult rats (n = 6) to monitor micromotion normal to the somatosensory cortex surface
    • Reluctance e.g. AC inductance varied with a floating bobbin (or so -- they do not list the details of this COTS device).
  • Pulsatile surface micromotion was observed to be in the order of 10-30 um due to pressure changes during respiration and 2-4 um due to vascular pulsatility.
  • Large inward displacements of brain tissue between 10-60 um were observed in n = 3 animals immediately following the administration of anesthesia

____References____

[0] Gilletti A, Muthuswamy J, Brain micromotion around implants in the rodent somatosensory cortex.J Neural Eng 3:3, 189-95 (2006 Sep)