In fact, surface and interior temperature, day night variations, onset of activity, percentage of active surface, intensity of different gas and dust fluxes are needed to select safe orbits around the comet and to optimize the scientific return.
Our multiunit recordings during natural sleep and intracellular recordings under ketamine/xylazine anesthesia show that deep layer (presumably layer V) neurons have a clear tendency to depolarize and fire action potentials at the onset of active state earlier than other neurons and thus lead the onset of activity in the network.
On the other hand, we take synaptic activation to occur on the fast time scale, reflecting the synchronized onset of activity in a presynaptic population; see Eqs. (2) and (3) below.
On the other hand, visual onset of vocal cord closure occurs before onset of activity in the submental muscles.
No difference in onset of activity was found between VMO and VL (p > 0.05) and onset of activity was not affected by level of load (p > 0.05).
Catalysts grown in phosphorus-containing media showed improved onset of activity, increased current density and higher selectivity for water formation.
Rosetta is a cornerstone ESA mission dedicated to the detailed study of a comet nucleus before and after the onset of activity.
Furthermore, the pain threshold does not correspond with the onset of activity in the nonmyelinated fibres, for pain can increase while the discharge of nerve impulses decreases.
The circadian pacemaker controls the onset and the offset of the animals' activity, a phenomenon that is thought to be regulated by a dual oscillator structure that, in nocturnal animals, leads to onset of activity around the beginning of the dark phase and offset of activity around the beginning of light phase3.
Moreover, PACAP-deficient mice express an unusually early onset of activities, from approximately four hours before the dark period, without influencing the phase of the endogenous circadian clock.
Thus, these previous reports seem to agree with the idea that deficits in negative masking contribute to early onset of activities in Adcyap1−/− mice.
