Table 1.

Summary of features of long-duration ictiform events

Duration(s)Frequency (Hz)Field spike duration (msec)Field spike amplitude (μV)
InterLDEIntraLDETonicTransClonicOverallTonicTransClonicOverallTonicTransClonic
10.6 ± 7.40.010 ± 0.0067.9 ± 4.114.4 ± 4.57.5 ± 3.34.0 ± 1.0162 ± 121108 ± 53128 ± 65226 ± 157446 ± 267450 ± 319463 ± 270432 ± 233
  • Values reported are means ± SD for at least five separate occurrences of long-duration ictiform events (LDEs) in seven different experiments. InterLDE frequency, The frequency of the periodicities of occurrence of LDEs; IntraLDE frequency, the frequency of population spike occurrence as computed by FFTs within LDEs across all phases; Tonic, Trans, and Clonic frequency, the frequency of population spike occurrence within the first (tonic), second (transitional), and third (clonic) phase of an LDE, respectively. Overall field spike duration, The duration of population spikes (measured across the baseline width) averaged across all phases of an LDE; Tonic, Trans, and Clonic field spike duration, the duration of population spikes averaged across the first (tonic), second (transitional), and third (clonic) phase of an LDE, respectively. Overall field spike amplitude, The amplitude of population spikes (measured from baseline to peak) averaged across all phases of an LDE; Tonic, Trans, and Clonic field spike amplitude, the amplitude of population spikes averaged across the first (tonic), second (transitional), and third (clonic) phase of an LDE, respectively.