Please assess the completion status of the following clinical trial:

Trial Title: UNderstanding CONSciousness Connectedness and Intraoperative Unresponsiveness Study

Study Design Characteristics:
- Allocation: None
- Intervention Model: SINGLE_GROUP
- Observational Model: None
- Primary Purpose: BASIC_SCIENCE
- Time Perspective: None
- Masking: NONE
- Phase: PHASE4
- Number of Arms: 1.0

Eligibility Criteria:
Inclusion Criteria:~* Age 18-40~* In good health, determined by the PI on the basis of medical history and a standard assessment for anesthesia to be documented as part of the study record~* Right handed, to standardize for asymmetry in brain functions~Exclusion Criteria:~* Adults \<18 years old or \>40 years old~* Pregnancy confirmed on pregnancy test on day of sedation~* Contraindication to anesthesia or allergy to study drug~* Difficult anesthesia: American Society of Anesthesiologists Physical Status greater than 1, per the discretion of the PI. Examples of ASA status include, but are not limited to:~  * Any systemic disease present, such as diabetes, cardiac, pulmonary, or other acute or chronic disorder, or history of smoking~ * Narrow angle glaucoma~ * Abnormal airway examination~ * Any abnormality on medical history and physical examination~ * Snoring or sleep disorders including apnea~ * Antecedent pulmonary aspiration risk (e.g., history GI reflux, heartburn, hiatal hernia)~ * Adverse reaction or allergy with anesthesia or other sedatives~ * Chronic medication use~ * History of difficult anesthesia, laryngoscopy or intubation~ * Family history of difficulty with anesthesia or sedation~ * History of vertigo, nausea or vomiting after anesthesia~* BMI \> 35~* Contraindication to HD-EEG, TMS or MRI for relative parts of the procedures. MRI exclusion criteria: presence of metallic or electronic implants; history of claustrophobia. TMS exclusion criteria: Presence or history of medical conditions that could increase the chance of seizures (e.g. - stroke, aneurysm, brain surgery, structural brain lesion) cranial metal implants; structural brain lesion; devices that may be affected by TMS (pacemaker, medication pump, cochlear implant, implanted brain stimulator); history of head trauma with loss of consciousness for greater than 5 minutes; family history of seizures; history of antecedent mood disorder.~* Exclusion from Dexmedetomidine:~  o Resting heart Rate\<60 bpm~* Exclusion from Propofol:~  o Reported egg allergy~* Exclusion from Ketamine:~  * History of post-operative nausea and vomiting~ * History of motion sickness~Additional exclusion criteria on the day of sedation:~* Anything to eat or drink for the preceding 8 hours~* Any use of over-the-counter or recreational drugs (including alcohol or tobacco) within the preceding 24 hours~* Any use of sedative or sleep agents within the preceding 24 hours~* Recent change in health, including cough, cold, or fever~* Exposure to anesthesia or sedation in the last 6 days

- Gender: ALL
- Minimum Age: 18 Years
- Maximum Age: 40 Years
- Healthy Volunteers: t

Study Arms:
- Drug Administrated (Type: EXPERIMENTAL): Sedatives will be administered to participants while their brain activity is measured.

Based on this trial design, predict the completion outcome and termination type (if applicable).