Slide 4

Measurement of the Extracellular Field in vivo during Up/Down States

Figure 4. Recording of the extracellular local field potential and multiple unit activity in the visual cortex of ferrets that are anesthetized with ketamine/xylazine. The recording electrode contains 16 contact points. Only one recording is shown. Note the Up/Down state activity in the local field and multiple unit recording (same recording site).