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. 2010 Jun 17;109(3):820–829. doi: 10.1152/japplphysiol.91430.2008

Fig. 2.

Fig. 2.

Effects of HBO on simultaneous recordings of the fEPSP and orthodromic population spike (oPS). A: exposure to 2.84 ATA O2 caused variable effects on the fEPSP (○). While the fEPSP was stimulated in only 1 slice, the oPS (●) was significantly (**P < 0.01) stimulated by exposure to 2.84 ATA O2 compared with baseline (n = 5) as denoted by the arrowhead. B: simultaneous recordings (n = 4) during exposure to 4.54 ATA O2 caused a significant stimulation (**P < 0.01) of the oPS (●), as denoted by the arrowhead, with a significant O2-induced potentiation (OxIP) on return to 0.95 ATA O2, but again, the fEPSP (○) was stimulated by HBO in only 1 of the 4 preparations. The oPS data at both levels of HBO were pooled with experiments recording just the oPS as reported in Ref. 9.