Group | Number of CSD events | EEG percent decrease | Frontal CSD amplitude decrease (mv) | Parietal CSD amplitude decrease (mV) | Duration (s) |
---|---|---|---|---|---|
KCl (1 M) | 9 | 64.39 ± 3.16 | 2.56 ± 0.53 | 2.11 ± 0.47 | 59.79 ± 5.84 |
aCSF | 0 | N/A | N/A | N/A | N/A |
Rats given a cortical KCl injection experienced at least one CSD event within the recording period. Rats injected cortically with aCSF did not experience CSD. CSD was marked by a significant reduction in both the power and amplitude of the EEG tracings and was only considered as an event when (1) the AC current was reduced by half; (2) the DC current exhibited a downward shift by a minimum of 1 mV; and (3) the duration was a minimum of 30 s.