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| Untersuchte Arbeit: Seite: 14, Zeilen: 14-20 |
Quelle: El Harrak 2009 Seite(n): 7, Zeilen: 1-6 |
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| CSD is an "all-or-none" process and spreads in the manner of a wave through gray matter. CSD appears first at the stimulated site and propagate in all directions at the velocity of 2–3 mm/min, so that increasingly distant areas undergo successively a similar temporary depression. An important characteristic feature of CSD is a propagating negative potential with amplitude of 10–30 mV and duration of more than 30 sec, which may be preceded or succeeded by a positive fluctuation of variable amplitude and duration (figure 2). | SD is an "all-or-none" type process and propagates in the manner of a wave through gray matter. SD appears first at the stimulated site and spreads out in all directions at the velocity of 2–3 mm/min, so that increasingly distant areas undergo successively a similar temporary depression. A crucial manifestation of SD is a propagating negative potential with amplitude of 10–30 mV and duration of more than 30 sec, which may be preceded or succeeded by a positive fluctuation of variable amplitude and duration (Figure 1). |
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