Neural Plasticity / 2009 / Article / Fig 1

Research Article

Plasticity of Horizontal Connections at a Functional Border in Adult Rat Somatosensory Cortex

Figure 1

The in vivo and in vitro preparations. (a) Lateral view of the rat brain with a schematic map of S1 overlaid. The gray circle depicts one location of forepaw/lower jaw border. Recordings were made in vivo to determine the location of the border and the border was marked with DiI. (b) Schematic of in vitro slice recording. The top solid line depicts pia and the bottom solid line depicts white matter, the border is the vertical thin line, and the border marked with DiI is the thin oval. The recording electrode recorded from a single neuron (triangle) approximately 100 μm from the marked border (black oval) and two stimulating electrodes were placed at the same depth from the pia at 300 μm from the tip of the recording electrode for continuous representation (gray square) and discontinuous representation stimulation (black square). Layer four was undercut (dashed line) in order to isolate the horizontal connections.
294192.fig.001a
(a)
294192.fig.001b
(b)

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