Using the Neq, static (μstatic,Neq), and kinetic (<μkinetic,Neq>) coefficients of friction were calculated [ 29], representing the resistance to the onset of motion and steady motion, respectively.
For each neuron, we first identified the well known "dip" in LIP activity that follows the onset of motion stimulus (see Figs. 3 5, first half of the motion epoch).
Relying on linear stability theory, the onset of motion in an initially motionless, stable concentration and stratified horizontal fluid layer heated from below was predicted by this author.
There was a period of rapid cooling around 20 Ma, shortly after the onset of motion on the MCT, with a corresponding drop off in rates shortly after that.
The onset of motion has been confirmed by comparing the measured axially symmetric fluorine shielding tensor with the asymmetric tensor obtained from ab initio calculations carried out on the rigid molecule.
Considering that the onset of motion along the XF is contemporaneous with the onset of rapid exhumation recorded along the Kangding transect at ∼9 Ma and a total offset of ∼62 km documented for the XF, the average slip rate of the XF is ∼7 mm/yr since 9 Ma.
The onset of motion coherence began either 0 s, 4.5 s, or 9 s after trial onset.
Hemodynamic responses were time-locked to the onset of motion coherence within each trial, and percent signal change was calculated with reference to the volume acquired at the onset of motion coherence (i.e., normalization).
A robust and reproducible response was elicited, even when the target was extinguished at the onset of motion and translation occurred in darkness.
Stimulus locking was performed by aligning and normalizing time courses to the volume corresponding to the onset of motion coherence at either 0 s, 4.5 s, or 9 s.
