Abnormal coherence imaging in panic disorder: a magnetoencephalography investigation

Area of Science:

• Neuroscience
• Psychiatry
• Medical Imaging

Background:

• Increased neural coherence, measured by magnetoencephalography (MEG), is linked to heightened neural excitability.
• Panic disorder (PD) is a debilitating psychiatric condition characterized by recurrent, unexpected panic attacks.

Purpose of the Study:

• To investigate coherence imaging values in patients diagnosed with panic disorder (PD).
• To determine if elevated coherence in PD patients is localized to limbic frontotemporal regions (LFTRs).

Main Methods:

• Magnetoencephalography (MEG) scans were performed on six PD patients and six healthy controls.
• Coherence imaging values were analyzed across 54 Brodmann areas using 148 magnetometer and 32 EEG channels.

Main Results:

• Coherence imaging values were significantly higher in PD patients compared to controls, despite a small sample size.
• Brain regions exhibiting increased coherence were predominantly located within the LFTRs in PD patients.

Conclusions:

• Elevated coherence imaging values in LFTRs may indicate increased neural excitability in patients with PD.
• These findings suggest that coherence values could serve as a biomarker for predicting treatment response to medications that modulate excitatory neurotransmission, such as benzodiazepines or antiseizure drugs.