Mapping and Modulating the Spatiotemporal Dynamics of Socio-Affective Processing
Baylor College of Medicine
Summary
The overall goal of this study is to map the spatiotemporal dynamics of social affective processing and to examine selective modulation of these dynamics in humans undergoing invasive intracranial monitoring for treatment-resistant epilepsy and depression. Pursuing this signal from a novel platform with invasive intracranial recording electrodes provides much-needed spatial and temporal resolution to characterize the neural dynamics of socio-affective processing. The investigators will leverage first-in-human intracranial neural recording opportunities created by a novel therapeutic platform termed "stereotactic electroencephalography-informed deep brain stimulation" (stereo-EEG-informed DBS), as well as the powerful platform of intracranial stereotactic recording and stimulation in patients undergoing epilepsy surgical evaluation at Baylor College of Medicine. The sEEG-informed DBS trial provides unique opportunities for intracranial recording of affect-relevant network regions in patients with treatment-resistant depression (TRD). Recordings in identical regions in epilepsy patients who themselves often demonstrate mild-moderate depressive symptoms will provide a wide dynamic range across the symptom spectrum. To provide critical data on the spatiotemporal dynamics of socio-affective processing the investigators will leverage these two human intracranial recording and stimulation cohorts to study the precise structural, functional, and causal properties of the affective salience network. Greater understanding of the social processing circuitry mediated by the affective salience network may be used to drive therapeutic innovation, pioneering a new paradigm that improves socio-emotional function across a wide variety of neuropsychiatric conditions. The results from this proposal have the potential to improve the lives of patients with dysfunction in social affective processing, with implications for a wide range of neuropsychiatric diseases.
Eligibility
- Age range
- 22–70 years
- Sex
- All
- Healthy volunteers
- Yes
Inclusion Criteria: 1. Men and women (non-pregnant) between ages 22 and 70; 2. DSM-5 diagnosis (assessed by Structured Clinical Interview for DSM-5 Axis I disorders SCID-5) of major depression disorder (MDD) as the primary diagnosis. A current major depressive episode (MDE), recurrent or single episode with first episode before age 60, secondary to nonpsychotic unipolar major depressive disorder; 3. Chronic illness with current MDE ≥24 months duration and/or recurrent illness with at least a total of 2 lifetime episodes (including current episode \>12 months); 4. Treatment resistance (defined…
Interventions
- DeviceDevice: Directional Deep Brain Stimulation
Boston Scientific Vercise DBS leads and 16-channel implanted pulse generators (IPGs) will be implanted to control the shape and size of stimulation
Location
- Baylor College of MedicineHouston, Texas