Biomedical subjects

K Graap

Publications and source records attributed to K Graap.

5 recordsLinked to original sources

PubMed2001

Virtual reality exposure therapy for Vietnam veterans with posttraumatic stress disorder.

BACKGROUND: Virtual reality (VR) integrates real-time computer graphics, body-tracking devices, visual displays, and other sensory input devices to immerse a participant in a computer-generated virtual environment that changes in a natural way with head and body motion. VR exposure (VRE) is proposed as an alternative to typical imaginal exposure treatment for Vietnam combat veterans with posttraumatic stress disorder (PTSD). METHOD: This report presents the results of an open clinical trial using VRE to treat Vietnam combat veterans who have DSM-IV PTSD. In 8 to 16 sessions, 10 male patients were exposed to 2 virtual environments: a virtual Huey helicopter flying over a virtual Vietnam and a clearing surrounded by jungle. RESULTS: Clinician-rated PTSD symptoms as measured by the Clinician Administered PTSD Scale, the primary outcome measure, at 6-month follow-up indicated an overall statistically significant reduction from baseline (p = .0021) in symptoms associated with specific reported traumatic experiences. All 8 participants interviewed at the 6-month follow-up reported reductions in PTSD symptoms ranging from 15% to 67%. Significant decreases were seen in all 3 symptom clusters (p < .02). Patient self-reported intrusion symptoms as measured by the Impact of Event Scale were significantly lower (p < .05) at 3 months than at baseline but not at 6 months, although there was a clear trend toward fewer intrusive thoughts and somewhat less avoidance. CONCLUSION: Virtual reality exposure therapy holds promise for treating PTSD in Vietnam veterans.

Follow-Up Studies↗

PubMed1999

Virtual reality exposure therapy for PTSD Vietnam Veterans: a case study.

Virtual reality (VR) integrates real-time computer graphics, body tracking devices, visual displays, and other sensory input devices to immerse a participant in a computer-generated virtual environment that changes in a natural way with head and body motion. VR exposure (VRE) is proposed as an alternative to typical imaginal exposure treatment for Vietnam combat veterans with posttraumatic stress disorder (PTSD). This report presents the results of the first Vietnam combat veteran with PTSD to have been treated with VRE. The patient was exposed to two virtual environments, a virtual Huey helicopter flying over a virtual Vietnam and a clearing surrounded by jungle. The patient experienced a 34% decrease on clinician-rated PTSD and a 45% decrease on self-rated PTSD. Treatment gains were maintained at 6-month follow-up.

Humans↗

PubMed1998

Regarding the database for the Peniston alpha-theta EEG biofeedback protocol.

Five papers by Peniston and colleagues, which constitute the basic literature for alpha-theta EEG biofeedback treatment for alcoholism and posttraumatic stress disorder, are reviewed. As a result, we raise three questions: (a) Are the samples studied independent? (b) What was the clinical status of the participants prior to treatment? (c) What treatment did the participants actually receive? In seeking answers to these questions we aim to strengthen the database for neurofeedback with specific procedural information so that claims of efficacy can be tested and accepted or rejected on an objective basis.

Alcoholism↗

PubMed1995

Differences in baseline EEG measures for ADD and normally achieving preadolescent males.

This study was designed as a replication of previous studies describing dynamic EEG differences between behaviorally dissimilar groups. This study is intended as a reference point from which other researchers can continue to establish the EEG correlates of "on-task" behavior. Eight Attention Deficit Disordered (ADD) children and eight Normally Achieving Controls (NAC) were assessed using dynamic EEG measures. Results are reported for the tasks of baseline (eyes open), reading, and drawing as recorded from FZ, CZ, PZ, C3, and C4. Significant amplitude differences between the groups were demonstrated in the theta band (4-8 hertz) during all tasks and for all sites. Amplitude differences in the beta band (12-20 hertz) were negligible. Differences between groups expressed as a ratio of theta/beta revealed significant differences mainly in the parietal region for on-task conditions. These results are discussed in relation to EEG neuro-feedback training paradigms and the importance of establishing normative "on-task" EEG values.

Child↗

PubMedDate not supplied

Reproductive and sexual health benefits in private health insurance plans in Washington State.

CONTEXT: Although unintended pregnancy and sexually transmitted diseases (STDs) are considerable problems in the United States, private health insurance plans are inconsistent in their coverage of reproductive and sexual health services needed to address these problems. METHODS: A survey administered to a market-representative sample of 12 health insurance carriers in Washington State assessed benefit coverage for gynecologic services, maternity services, contraceptive services, pregnancy termination, infertility services, reproductive cancer screening, STD services, HIV and AIDS services, and sterilization, as well as for the existence of confidentiality policies. "Core" services in each category were defined based on U.S. Preventive Services Task Force and other recommendations. RESULTS: Of the 91 top-selling plans on which data were collected, 8% were indemnity plans, 14% were point-of-service plans, 21% were preferred-provider organization plans and 57% were health maintenance organization (HMO)-type products; they had a combined enrollment of 1.4 million individuals. Coverage of core services varied widely by type of plan. While a high proportion of plans covered core gynecologic, maternity, reproductive cancer screening, STD and HIV and AIDS services, nearly half of plans did not cover any kind of contraceptive method. Approximately 13% of female enrollees did not have core coverage for gyneco!ogic services, 19% for matemity services, 75% for contraception, 37% for sterilization and 53% for pregnancy termination; 98% of women and men were not covered for infertility treatment. Most carriers did not have specific policies for maintaining privacy of sensitive health information. Overall, benefit coverage was lower for indemnity, preferred-provider organization and HMO plans in Washington State than has previously been seen nationally. CONCLUSIONS: A sizable proportion of women and men in Washington State who rely on private-sector health insurance lack comprehensive coverage for key reproductive and sexual health services.

Family Planning Services↗