Dorsal surface of the skull of (A) Rugops (MNN IGU1), (C) Carnotaurus (MACN-CH 894) and dorsal surface of the fused nasal of (B) Abelisaurus (MPCA 11908).
The presence of these tissues suggests that Rugops had, at least two categories of tissues covering the surface of the skull.
The periosteum on the inner surface of the skull is also modified to some extent as it joins the dura mater, the membrane protecting the brain.
They used CT scans to create internal casts showing the shape of the brain from the impression it left on the inner surface of the skull.
A needle connected to an infusion pump through a Hamilton syringe was lowered into each ventral hippocampi at coordinates: AP −3.0 mm ML ±3.5 relative to bregma and −5.0 relative to the surface of the skull.
These interfaces typically decode brain signals from the surface of the skull through EEG or implanted electrodes and then translate the signals into a motion command for a robotic prosthetic limb or a cursor on a keyboard.
What I do is completely different: I follow the surface of the skull exactly, usually covering it with semi-precious stones". Yet Hirst and Gregory seem be treading surprisingly similar paths.
For one, the surface of the skull shows grooves were blood vessels used to be, evidently to nourish a fingernail-hard covering of keratin that was similar to the thicker layer that covered the adult skull.
When approaching the inner surface of the skull, only minimal pressure should be used to prevent damage to the brain.
The total time from initiation of anesthesia to removal of the nose cone prior to the zeroing of the impactor tip to the surface of the skull was 10 min.
The frontal lobe was immediately softer and deflated away from the inside surface of the skull.
