![Figure 3. Typical traces showing high K+-mediatedincreases in [Ca2+]iin the CA1 pyramidal cell layer of hippocampal slices (left) and layers II to III of cortical slices (right) in the absence and presence of thiopental (Thio). The vertical line indicates the net change in the ratio of fluorescence intensities at 340 nm and 380 nm. Closed triangles indicate the onset of 60 mM K+(60 s). Thiopental was present 5 min before the onset of high K+and was absent during the application of high K+.](https://asa2.silverchair-cdn.com/asa2/content_public/journal/anesthesiology/89/2/10.1097_00000542-199808000-00023/2/23ff3.png?Expires=1716506892&Signature=nCCwsC~Ot-s7BAB4Xicy-wtKTtc7TRRiyEr2H8iSm36a6Ysx~9mP0LdrRgOomH18hOK8tdJr8AuPgYxfplJx7lf-rPre0~IzQlfymWkUI~1woup0bqTO0tRi-apCeK6TamQobtK1SUcYtQXnDHK~0ERHDVBDVR~lPQghHzda0jLKXpjR-tTmhST2TkVVv9Dc1JoETtICx9eP-L21wMCqIMMxi5UBF1lidDITeoDDA2n0loPG5a2NvWSvZz~BOdlPv6EnOAVE7MEYkBzSw6DratZkRDxHHO88hveXVlh-llfLpq~0bWs4UcuEB2RSZxLTJgqSSN1Ogppfe~3-lQ5lIg__&Key-Pair-Id=APKAIE5G5CRDK6RD3PGA)
Figure 3. Typical traces showing high K+-mediatedincreases in [Ca2+]iin the CA1 pyramidal cell layer of hippocampal slices (left) and layers II to III of cortical slices (right) in the absence and presence of thiopental (Thio). The vertical line indicates the net change in the ratio of fluorescence intensities at 340 nm and 380 nm. Closed triangles indicate the onset of 60 mM K+(60 s). Thiopental was present 5 min before the onset of high K+and was absent during the application of high K+.
