Relationship between orientation to a blast and pressure wave propagation inside the rat brain

Mikulas Chavko*, Tomas Watanabe, Saleena Adeeb, Jason Lankasky, Stephen T. Ahlers, Richard M. McCarron

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

112 Scopus citations


Exposure to a blast wave generated during an explosion may result in brain damage and related neurological impairments. Several mechanisms by which the primary blast wave can damage the brain have been proposed, including: (1) a direct effect of the shock wave on the brain causing tissue damage by skull flexure and propagation of stress and shear forces; and (2) an indirect transfer of kinetic energy from the blast, through large blood vessels and cerebrospinal fluid (CSF), to the central nervous system. To address a basic question related to the mechanisms of blast brain injury, pressure was measured inside the brains of rats exposed to a low level of blast (~35. kPa), while positioned in three different orientations with respect to the primary blast wave; head facing blast, right side exposed to blast and head facing away from blast. Data show different patterns and durations of the pressure traces inside the brain, depending on the rat orientation to blast. Frontal exposures (head facing blast) resulted in pressure traces of higher amplitude and longer duration, suggesting direct transmission and reflection of the pressure inside the brain (dynamic pressure transfer). The pattern of the pressure wave inside the brain in the head facing away from blast exposures assumes contribution of the static pressure, similar to hydrodynamic pressure to the pressure wave inside the brain.

Original languageEnglish
Pages (from-to)61-66
Number of pages6
JournalJournal of Neuroscience Methods
Issue number1
StatePublished - 30 Jan 2011
Externally publishedYes


  • Blast overpressure
  • Explosion
  • Rat brain
  • Transmission


Dive into the research topics of 'Relationship between orientation to a blast and pressure wave propagation inside the rat brain'. Together they form a unique fingerprint.

Cite this