OBJECTIVE: The study of @entity302 electroencephalograph (EEG) dynamics can potentially provide insights into @entity410 onset, evolution and termination. We propose a new synthetic measure based on time-frequency decomposition to provide detailed characterization of these dynamic changes. METHODS: The matching pursuit (MP) method allows for continuous time-frequency decomposition. We have developed a derivative of the MP method, the Gabor atom density method (GAD) that facilitates interpretation during the dynamic ictal period. The GAD analysis was applied to intracranial recordings of complex partial @entity410 (n = 43) of mesial temporal origin in 7 @entity1 . RESULTS: Complex partial @entity410 occurrence is systematically associated with a GAD increase of 400 +/- 150%. The GAD increase coincides with the electrographical evidence of @entity410 onset. The similarity between @entity410 in a given @entity1 is very high with uniform onset slope, maximum level and termination pattern. Global GAD responses over all channels can reveal detailed @entity410 propagation patterns including secondary independent foci and secondary generalization. CONCLUSIONS: The GAD measure based on the MP decomposition is a reliable tool to detect @entity410 occurrence in long-term recordings, to differentiate @entity410 from artifacts on a multi-channel basis and to examine patterns of @entity410 propagation. The reproducible GAD pattern suggests consistent changes in signal inner structure and may provide new clues about @entity410 dynamics and evolution. SIGNIFICANCE: The GAD method can provide information about @entity410 dynamics that can contribute to methods of @entity410 detection. These analyses may lead to better understanding of @entity410 termination and help facilitate application of responsive @entity410 control devices in @entity1 .

Characterization of XXXX dynamics using Gabor atom density.

@entity1 :: ('9606', 'Species') :: ['patients', 'humans', 'patient'] @entity410 :: ('MESH:D012640', 'Disease') :: ['seizure', 'seizures'] @entity302 :: ('MESH:D004827', 'Disease') :: ['epileptic']
@entity302 :: (MESH:D004827,Disease) :: ['epileptic seizure']
