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Network Analysis of Foramen Ovale Electrode Recordings in Drug-resistant Temporal Lobe Epilepsy Patients
Published on: December 18, 2016
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Altered flow of information in temporal lobe epilepsy
Soheil Keshmiri1, Seann Wang2, Bernd Kuhn1
1Optical Neuroimaging Unit, Okinawa Institute of Science and Technology, Japan.
Neurobiology of Disease
|April 15, 2026
Summary
Temporal lobe epilepsy (TLE) involves altered brain information flow. This study found both decreased right-lateralized and increased left-hemispheric information flow patterns in TLE patients, correlating with cognitive symptoms.
Area of Science:
- Neuroscience
- Epilepsy Research
- Brain Connectivity
Background:
- Temporal lobe epilepsy (TLE) is the most prevalent form of epilepsy.
- The role of information flow hierarchy and asymmetry in TLE etiology is not well understood.
Purpose of the Study:
- To investigate directed functional information flow in TLE using transfer entropy (TE).
- To identify distinct patterns of information flow associated with TLE.
- To correlate these patterns with cognitive and behavioral symptoms.
Main Methods:
- Utilized transfer entropy (TE) to analyze directed functional information flow in 188 participants (116 with TLE).
- Examined brain information flow patterns, including lateralization and interhemispheric connections.
- Correlated identified patterns with cognitive and behavioral assessments.
Main Results:
- Identified two distinct TLE-associated information flow patterns: decreased and increased flow.
- Reduced information flow was primarily right lateralized.
- Increased information flow was interhemispheric, predominantly targeting left hemispheric regions.
- These patterns correlated with cognitive deficits (WASI, AABC, JLO_R, FAS_R) and differentiated TLE from controls.
Conclusions:
- TLE is characterized by asymmetrical information flow, including increased left-hemispheric flow.
- Altered information flow patterns are linked to cognitive and behavioral symptoms in TLE.
- Findings suggest novel therapeutic targets by focusing on brain regions critical to TLE manifestation.
