If it does, it would suggest that the whole embryo is involved in a complex system of mechanical feedbacks and it would raise the question of how these long-range feedback processes are coordinated to produce localized shape changes [11], [13].
One is the identification of elements of interactive networks that fulfill the criteria of short-range positive feedback and long-range negative feedback.
Candidates are long range horizontal connected circuits, spatially divergent feedback from layer II of frontal areas, direct interactions between area 7a and DP, and sub-cortical projection from locus coeruleus basal forebrain and basal ganglia [43], [50] [54].
Morphogenetic gradients with distinct patterning effects, such as production of ray and trans versus disc flowers in gerbera, can be set up by simple threshold models of short range activation and long range inhibition, so long as the feedback loops are non-linear [ 71].
These motifs constitute short-range positive and long-range negative feedback loops to induce Turing instability.
Long-range inhibitory feedback (green) is a well-established pattern formation mechanism to confine the spread (bottom row).
Here, we develop a spatially-explicit model of tree island formation and evolution, which accounts for these positive feedbacks (facilitation) as well as for long range competition and fire dynamics.
"Long range de Blasio forecast: one term".
Jamie Walker levels with long range effort.
long range electron transfer.
