Move Retinal Position Retinal region that you Control

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Move Retinal Position: Retinal region that you Control can be your stimulated. virtual electrode

Move Retinal Position: Retinal region that you Control can be your stimulated. virtual electrode here. The grid allows you Allows you to view Unlike different other regions simulation, of to theselect retina. the receptive the cortical field column being studied. The descend Location refers to the Might center not of bescreen in this in area. button arbitrary moves units the electrode deeper into the cortex. Select your stimulus here Control parameters of the stimulus here The firing rate of the cell is shown here

Viewing Different Areas of the Retina The position of the center of the screen

Viewing Different Areas of the Retina The position of the center of the screen on the fovea is indicated here. The units are arbitrary. Think of them as mm. The position 0, 0 indicates the fovea. Move Retinal Position: The red arrows will move in the indicated direction ¼ the visible area in that direction. That is, if the center is 0 and the right edge is 50, one click on the right red arrow will put the center at 25. It is the same proportion, not absolute movement for the vertical arrows.

Controlling the Stimulus You can move your stimulus across the visible retinal area by

Controlling the Stimulus You can move your stimulus across the visible retinal area by either Select your stimulus here. your mouse over the area or using the sliders along the sides. dragging With these controls you can change the bar or dot width, the bar tilt (orientation) through -90 to +90 deg, and put the stimulus in the center of the visible retina. If the moving bar is used, you can reverse the direction of motion. If present, there is a checkbox you can select to show the receptive field.

Output of the Cell’s output. Think of the value as being number of action

Output of the Cell’s output. Think of the value as being number of action potentials a second.

Controlling the Electrode Current Position of Electrode: Pressing this button allow you to record

Controlling the Electrode Current Position of Electrode: Pressing this button allow you to record Recall that the cortexwill is divided into from a cell deeper. The in the cortex. can vertical columns. lateral and You vertical record 25 current cells in any column. positionfrom is the column being. Once astudied cell hasrelative been left it cannot be accessed to the first column. The again first is the left edge ofa the Striate Eachcolumn white square represent different cortex, vertically. will be the to columncentered on the cortex. Click. This on that square fovea. You can from only move to the starting right butwith start recording that cortex, both and down. The depth is the a cell up nearest the surface. When you select a distance fromcolumn the surface in grayed numberout. of Once column, that will be cells recorded from. you cannot again record you leave a column from that column again. This control will allow you to select a new region of brain whose column you wish to record from. Initially you can move up, down, and to the right. Once you have left a brain region, you cannot return and record from any other cells in that region.