Monitoring Neurological Injury by qEEG - Quantitative EEG Analysis Methods and Clinical Applications - page 172

7-minute hypothermia
Baseline

7-minute normothermia
Baseline

20 min 20 min

60 min

60 min

240 min 240 min

840 min

840 min

24 hours

24 hours

48 hours

48 hours

72 hours 72 hours

50 V

μ

1 sec

(a)

(b)

Total
EEG
data

50 V 50 V η η

1hr 1hr

50 η 50 η

I I

0.5 min 0.5 min

50 η 50 η

II II

50 η 50 η

III III

0.5 min 0.5 min

50 V 50 V η

η

IV IV

0.5 min 0.5 min

50 V 50 V η η

V V

0.5 min 0.5 min

50 η 50 η

VI VI

0.5 min 0.5 min

50 η 50 η

VII VII

0.5 min 0.5 min

50 η 50 η

VIII VIII

0.5 min 0.5 min

(c) (d)
Figure 7.1 Raw EEG data for representative animals at various time points with 7-minute asphyxial
CA: (a) real-time raw EEG under hypothermia; (b) real-time raw EEG under normothermia; (c) raw
compressed EEG under hypothermia, (I) baseline prior to CA, 0 minute, (II) early stage after CA, 20
minutes, (III) initiation of hypothermia, 60 minutes, (IV) hypothermia maintenance period, 4 hours,
(V) initiation of rewarming, 12 hours, (VI) late recovery, 24 hours, (VII) late recovery, 48 hours, (VIII)
late recovery, 72 hours; and (d) raw compressed EEG under normothermia. ( From: [64]. © 2006
Elsevier. Reprinted with permission.)