Dr. Sameer Sheth, PhD, MD
Claim this profileBaylor College of Medicine
Affiliated Hospitals
Baylor College Of Medicine
Clinical Trials Sameer Sheth, PhD, MD is currently running
Brain Activity Monitoring
for Epilepsy
Humans have a remarkable ability to flexibly interact with the environment. A compelling demonstration of this cognitive flexibility is human's ability to respond correctly to novel contextual situations on the first attempt, without prior rehearsal. The investigators refer to this ability as 'ad hoc self-programming': 'ad hoc' because these new behavioral repertoires are cobbled together on the fly, based on immediate demand, and then discarded when no longer necessary; 'self-programming' because the brain has to configure itself appropriately based on task demands and some combination of prior experience and/or instruction. The overall goal of our research effort is to understand the neurophysiological and computational basis for ad hoc self-programmed behavior. The previous U01 project (NS 108923) focused on how these programs of action are initially created. The results thus far have revealed tantalizing notions of how the brain represents these programs and navigates through the programs. In this proposal, therefore, the investigators focus on the question of how these mental programs are executed. Based on the preliminary findings and critical conceptual work, the investigators propose that the medial temporal lobe (MTL) and ventral prefrontal cortex (vPFC) creates representations of the critical elements of these mental programs, including concepts such as 'rules' and 'locations', to allow for effective navigation through the algorithm. These data suggest the existence of an 'algorithmic state space' represented in medial temporal and prefrontal regions. This proposal aims to understand the neurophysiological underpinnings of this algorithmic state space in humans. By studying humans, the investigators will profit from our species' powerful capacity for generalization to understand how such state spaces are constructed. The investigators therefore leverage the unique opportunities available in human neuroscience research to record from single cells and population-level signals, as well as to use intracranial stimulation for causal testing, to address this challenging problem. In Aim 1 the investigators study the basic representations of algorithmic state space using a novel behavioral task that requires the immediate formation of unique plans of action. Aim 2 directly compares representations of algorithmic state space to that of physical space by juxtaposing balanced versions of spatial and algorithmic tasks in a virtual reality (VR) environment. Finally, in Aim 3, the investigators test hypotheses regarding interactions between vPFC and MTL using intracranial stimulation.
Recruiting
1 award
N/A
Deep Brain Stimulation
for Bipolar Disorder
This study is only enrolling at Baylor College of Medicine. The other research locations listed serve to support data analysis only. This research study is to investigate the use of technology called Deep Brain Stimulation (DBS) to potentially improve Treatment-Resistant Bipolar Depression (TRBD) symptoms in patients with severe cases. DBS involves the surgical implantation of leads and electrodes into specific areas of the brain, which are thought to influence the disease. A pack implanted in the chest, called the neurotransmitter, keeps the electrical current coursing to the brain through a wire that connects the neurotransmitter and electrodes. It is believed DBS may restore balance to dysfunctional brain circuitry implicated in TRBD. The goal of this study is to enhance current approaches to DBS targeting in the brain and to use a novel approach to find a better and more reliable system for TRBD treatment. Its important for participants to understand that this is an investigational study where there could be a lack of effectiveness in improving TRBD symptoms. There may be no directly benefit from taking part in this study. This study is expected to last 20 months and involves 3 main steps. 1. Medical, psychiatric, and cognitive evaluations. 2. Implantation of a brain stimulation system. 3. Follow up after implantation of device, including programming, recording, and psychiatric testing. There are risks and benefits to this study which need to be considered when deciding to participate or not. Some of the risks are from surgery, the DBS device and programming, the tests involved, and potential loss of confidentiality, as well as other unknown risks. Some of the more serious risks involved in this study and the percentage that they occur: 1. Bleeding inside the Brain (1 to 2 percent). 2. Infection from the procedures (3 percent) 3. Seizure caused from the procedures (1.2 percent) However, the benefit of this study is that it may help relieve or decrease TRBD symptoms. This form of treatment has shown to reduce symptom severity in other cases. This could potentially improve quality of life and activities in daily routines. There is also a potential benefit to society in that the data the investigators will obtain from this study may help increase the understanding of the mechanisms underlying TRBD symptoms, as well as enhanced Deep Brain Stimulation techniques. Study participation is expected to last 20 months from the time the DBS device is activated and should include approximately 23 visits. These visits also include 8 separate, 24 hour stays at the Menninger NeuroBehvaioral Monitoring Unit (NBU). These 24-hour sessions will occur at multiple points throughout the study (1 week prior to surgery, the week preceding device activation, the week following activation, then after 2 weeks, 4 weeks, 6 months, 9 months, and 12 months). Participants will need to stay locally for the week of the NBU stay (typically Monday through Friday). Study visits will include clinician administered assessments and questionnaires, subject reported assessments, neuropsychological testing, and mobile behavioral assessments which will occur around 23 visits over the course of 20 months.
Recruiting
1 award
N/A
5 criteria
More about Sameer Sheth, PhD, MD
Clinical Trial Related
7 years of experience running clinical trials · Led 5 trials as a Principal Investigator · 2 Active Clinical Trials
Treatments Sameer Sheth, PhD, MD has experience with
- Directional Deep Brain Stimulation
- Commercially Available 8-contact Boston Scientific Leads
- Medtronic Percept RC Neurostimulator
- Novel 16-contact Boston Scientific Leads (total 64 Implanted DBS Contacts)
- BX Pulsar 1002
- EMU
Breakdown of trials Sameer Sheth, PhD, MD has run
Obsessive-Compulsive Disorder
Major Depressive Disorder
Depression
Bipolar Disorder
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Frequently asked questions
Do I need insurance to participate in a trial?
Almost all clinical trials will cover the cost of the ‘trial drug’ — so no insurance is required for this. For trials where this trial drug is given alongside an already-approved medication, there may be a cost (which your insurance would normally cover).
What does Sameer Sheth, PhD, MD specialize in?
Sameer Sheth, PhD, MD focuses on Obsessive-Compulsive Disorder and Major Depressive Disorder. In particular, much of their work with Obsessive-Compulsive Disorder has involved treating patients, or patients who are undergoing treatment.
Is Sameer Sheth, PhD, MD currently recruiting for clinical trials?
Yes, Sameer Sheth, PhD, MD is currently recruiting for 2 clinical trials in Houston Texas. If you're interested in participating, you should apply.
Are there any treatments that Sameer Sheth, PhD, MD has studied deeply?
Yes, Sameer Sheth, PhD, MD has studied treatments such as Directional Deep Brain Stimulation, Commercially available 8-contact Boston Scientific leads, Medtronic Percept RC neurostimulator.
What is the best way to schedule an appointment with Sameer Sheth, PhD, MD?
Apply for one of the trials that Sameer Sheth, PhD, MD is conducting.
What is the office address of Sameer Sheth, PhD, MD?
The office of Sameer Sheth, PhD, MD is located at: Baylor College of Medicine, Houston, Texas 77030 United States. This is the address for their practice at the Baylor College of Medicine.
Is there any support for travel costs?
The coverage of travel expenses can vary greatly between different clinical trials. Please see more financial detail in the trials you’re interested to apply.
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