EYE BRAIN AND VISION - PART 2 pdf

... transparent front part of the eye) and lens together form the equivalent of the camera lens. About two-thirds of the bending of light neces- sary for focusing takes place at the air-cornea interface, ... bucket-brigade-like handing on of information from one stage to the next. Today we know far more about the ways in which the information is transformed in some parts of the brain; in...

Ngày tải lên: 09/08/2014, 20:22

... both inside and outside the cell will contain chloride, potassium, sodium, and calcium ions (Cl , K+, Na+ and Ca 2+ . In the resting 2 structures, whose functions are still a partial or complete ... about the region of brain called the motor cortex and have a rough idea of its function: it subserves voluntary movement; destroy it on one side and the hand and face and le...

Ngày tải lên: 09/08/2014, 20:22

... only about 20 to 30 degrees. (Remember that the visual environment is inverted and reversed on the retina by the optics of the eye. ) The big difference between one-eyed and two-eyed vision is ... an equal number of left -eye and right -eye cells, at least in parts of the cortex subserving vision up to about 20 degrees from the direction of gaze. Beyond this center-surround...

Ngày tải lên: 09/08/2014, 20:22

... possible patterns are a checker-board, stripes, and islands in an ocean. In this case, the surface is the cortex, and the regions are left -eye and right -eye. 14 locally and help to distribute the ... 4 feeds the layers above and below mainly by up -and- down connections, the regions of eye preference in three dimensions are a series of alternating left- and right -eye...

Ngày tải lên: 09/08/2014, 20:22

... orientations and then come back to the first, and cycle around again, instead of packing together all cells with 30-degree orientation, all cells with 4 2- degree orientation, and indeed all left -eye ... early, and the number of examples are still too few, to allow an interpretation of the patterns in terms of fractures and reversals, but the method is promising. 24 ocea...

Ngày tải lên: 09/08/2014, 20:22

... turned off. If you look at the left black -and- white square on this page with the left eye and the right one with the right eye, by crossing or uncrossing your eyes or with a stereoscope, you might ... obviously monocular, and geniculate cells, because of the left -eye, right -eye layering, are for all intents and purposes monocular: they respond to stimulation of either one ey...

Ngày tải lên: 09/08/2014, 20:22

... red-green, yellow-blue, and black-white, was regarded in his time and for the next half-century as rivaling and contradicting the Young-Helmholtz three-pigment (red, green, and blue) theory: ... using broad-band light or by using a mixture of narrow-band lights, such as yellow and blue or red and blue-green. Two beams of light are called complementary if their wavelength conte...

Ngày tải lên: 09/08/2014, 20:22

... to and branch in separate left -eye and right -eye regions. They first send branches everywhere over a radius of a few millimeters, and only later, around the time of birth, do they retract and ... synapse with C, and the A-to-C synapse is weak and the B-to-C synapse is strong; suppose further that A and B fire at about the same time or that B fires just slightly ahead of...

Ngày tải lên: 09/08/2014, 20:22

... Ozkaramanli et al. (20 02) 3 [6,6] 2 o s MW2 A. Bhatti (20 02) ; Ozkaramanli et al. (20 02) 3 [6,6] 3 o as MW3 A. Bhatti (20 02) ; Ozkaramanli et al. (20 02) 3 [8,8] 4 o s Table 1. Employed wavelets and multiwavelets ... Chui (19 92) 2 [3,3] 2 o s SA4 Strela (1996) 2 [4,4] 1 o s BIH52S Strela (1998) 2 [5,3] 2 bo s BIH32S Strela (1998) 2 [3,5] 4 bo s BIH54N Strela (1998) 2 [5...

Ngày tải lên: 10/08/2014, 21:22