Search results
Results From The WOW.Com Content Network
The dorsal pathway contains cells that are more sensitive to coarse stereopsis. This allows for simple computations of depth based upon the different images in both the left and right eyes, but this computation only occurs when the surfaces analyzed contain a gradient of different depths. [1]
An alternative cell decomposition has one (n-1)-dimensional sphere (the "equator") and two n-cells that are attached to it (the "upper hemi-sphere" and the "lower hemi-sphere"). Inductively, this gives S n {\displaystyle S^{n}} a CW decomposition with two cells in every dimension k such that 0 ≤ k ≤ n {\displaystyle 0\leq k\leq n} .
Complex cells appeared to match the subunit model, but still lacked the restriction that the receptive fields are linear. This was also tested by measuring the response of a cell when the stimulus contains two bars, which would help show the properties of the receptive field subunit.
There are several equivalent definitions of a Riemann surface. A Riemann surface X is a connected complex manifold of complex dimension one. This means that X is a connected Hausdorff space that is endowed with an atlas of charts to the open unit disk of the complex plane: for every point x ∈ X there is a neighbourhood of x that is homeomorphic to the open unit disk of the complex plane, and ...
The components of bilayers are distributed unequally between the two surfaces to create asymmetry between the outer and inner surfaces. [2] This asymmetric organization is important for cell functions such as cell signaling. [3] The asymmetry of the biological membrane reflects the different functions of the two leaflets of the membrane. [4]
The horopter as a special set of points of single vision was first mentioned in the eleventh century by Ibn al-Haytham, known to the west as "Alhazen". [3] He built on the binocular vision work of Ptolemy [4] and discovered that objects lying on a horizontal line passing through the fixation point resulted in single images, while objects a reasonable distance from this line resulted in double ...
A hybrid cell line is a fusion of cells from two different cell types. When the membrane of two cells merge, the nuclei combine to form a polykaryote (poly- multiple; karyon- chromosome ). [ 1 ] These fusions can happen spontaneously as in the case of tumor hybrid cells, or may be induced by a variety of laboratory techniques.
An abstract cell complex is a particular case of a locally finite space in which the dimension is defined for each point. It was demonstrated that the dimension of a cell c of an abstract cell complex is equal to the length (number of cells minus 1) of the maximum bounding path leading from any cell of the complex to the cell c. The bounding ...