Dictionary of molecular biology. 2004.
spatial sensing — Mechanism of sensing a gradient in which the signal is compared at different points on the cell surface and cell movement directed accordingly. Translocation of all or part of the cell is not required. See temporal and pseudospatial gradient… … Dictionary of molecular biology
gradient perception — Problem faced by a cell that is to respond directionally to a gradient of, for example, a diffusible attractant chemical. In a spatial mechanism the cell would compare receptor occupancy at different sites on the cell surface; a temporal… … Dictionary of molecular biology
temporal sensing — Mechanism of gradient sensing in which the value of some environmental property is compared with the value at some previous time, the cell having moved position between the two samplings. Initial movement is random; until the second observation… … Dictionary of molecular biology
