The conductivity of neonatal piglet skulls.
We report the very first measured values of conductivities for neonatal mammalian skull samples. We measured the typical radial (normal towards the skull surface) conductivity of fresh neonatal piglet skull samples at 1 kHz and found it around 30 mS m(-1) at ambient room temps around 23 �C. Dimensions were made on examples of either frontal or parietal cranial bone, utilizing a saline-filled cell technique. The conductivity value we observed was roughly two times the values reported for adult skulls (Oostendorp et al 2000 IEEE Trans. Biomed. Eng. 47 1487-92) utilizing a similar technique, but in a frequency close to 5 Hz. Further, we discovered that the conductivity of skull fragments elevated linearly with thickness. We found evidence this was associated with variations in composition between your frontal and parietal bone samples examined, which we feel happens because frontal bones contained a bigger fraction of greater conductivity cancellous bone material.
Photo:�Will s Skull Page
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