Complementary Phenomena: Phantom Hand and Phantom Face.

After tissue or limb loss, the development of sensation and perception of the lost or deafferent tissue is defined as a phantom phenomenon. We investigated the presence of phantom phenomena in individuals who underwent a full face transplant as well as those who had a hand transplant. Specifically, we investigated sensory perception of the face on the fingers and sensory perception of the fingers on the face in three full face and four hand transplant patients. In all seven individuals, we used a brush to separately stimulate the right and left sides of the face or the palmar and dorsal faces of the hand. We then asked the individuals if they felt a sensation of touch on any other part of their body and, if so, to describe their perceptions. Changes in the regions of the primary sensory cortex representing the hand and face were defined using fMRI obtained via tactile sensory stimulation of the clinical examination areas. Two of the full face transplant patients reported sensory perceptions such as a prominent sensation of touch on their faces during sensory stimulation of their fingers. Three of the hand transplant patients reported sensory perceptions, which we referred to as finger patches, during sensory stimulation of the face area. In fMRI, overlaps were observed in the cortical hand and face representation areas. We consider the phantom hand and phantom face phenomena we observed to be complementary due to the neighborhood of the representations of the hand and face in the somatosensory cortex.

Adaptive analysis of cortical plasticity with fMRI in full face and arm transplants.

The aim of this study is to examine cortical plasticity and to analyze cortical reorganization following hand and facial transplantation, using functional magnetic resonance imaging. Patients who had undergone full-face transplantation, hand transplantation and scapular arm replantation, as well as healthy controls, participated in the study. The perioral area and volar surfaces of the index finger and thumb were stimulated and images were acquired using 3 T functional MRI. The areas of the somatosensory cortex representing the hand and face are different in size and shape due to experience-dependent plasticity. Therefore, a new and more adaptive volume of interest analysis was created whereby the radiuses of the VOI masks were defined by the peak intensity of subsequent clusters. For each control subject, the distribution of activated voxels was observed for various cluster defining thresholds in order to determine the mean number of activated voxels for each stimulation inside the defined region. The determined numbers of voxels per subject were extracted from the defined regions using a binary search algorithm. Subsequently, the distances between the weighted centers of the extracted regions were calculated and compared. In transplant patients, the weighted centers of the hand and face clusters were separated at same-sized volumes. Two of the rehabilitated full-face transplant patients converge to the range of the controls. As a result, the weighted distribution of somatotopy indicated previous and present cortical reorganization. Additionally, referred sensation was assessed in two full-face transplant and one replant patient with activation clusters partially in BA40 in the Inferior Parietal Lobule.

Effects of the cognitive stimulation therapy based on Roy's adaptation model on Alzheimer's patients' cognitive functions, coping-adaptation skills, and quality of life: A randomized controlled trial.

PURPOSE: This study aims to specify the effects of Cognitive Stimulation Therapy based on Roy's adaptation model (RAM) on Alzheimer's patients' coping and adaptation skills, cognitive functions, and quality of life (QOL). DESIGN AND METHODS: This is an experimental and randomized controlled trial. Patients in the experimental group received cognitive stimulation therapy (CST) based on RAM. FINDINGS: The cognitive function level of the experimental group was found to be higher than that of the control group at the end of the measurements (performed in the 7th week); the difference was found to be statistically significant (P < .05). In the experimental group, dimensions of troubleshooting and focusing, making physical decisions, attention processing, systematizing, learning, and establishing relationships were found to be better than those of the control group after the application, and the difference was found to be statistically significant (P < .05). However, after the application, QOL of the experimental group was found to be better than that of the control group following the measurements; the difference was found to be statistically significant (P < .05). PRACTICE IMPLICATIONS: Psychiatric nurses should evaluate the patients using Standardize Mini-Mental Test Examination before applying RAM-based CST, and they should apply CST to early- and mid-stage Alzheimer's disease (AD) patients at the end of the evaluation and work with groups consisting of six persons at most. Since the cognitive functions of individuals with AD decline from the first stage, coping-adaptation, and QOL levels will also be affected, so it is recommended to evaluate the cognitive functions, coping-adjustment and QOL levels of individuals before applying RAM-based CST. TRIAL REGISTRATION NUMBER: NCT02229474.

Contribution of auditory P300 test to the diagnosis of mild cognitive impairment in Parkinson's disease.

Abnormalities in auditory P300 test have been observed in patients with Parkinson's disease (PD). We aimed to investigate whether or not additional electrophysiological tests assist in making the clinical diagnosis of mild cognitive impairment in Parkinson's disease (PD-MCI), and we evaluated P300 changes in patients with non-demented PD and analyzed the correlation between the cognitive features and P300 changes. Twenty patients with PD who had been diagnosed with mild cognitive impairment (PD-MCI group) according to the Movement Disorder Society (MDS) 2012 PD-MCI level II criteria, 21 patients with PD without cognitive impairment (PD-Normal group), and 20 control subjects (control group) who were neurologically normal were examined by the standard auditory oddball paradigm. The N100, P200, N200, and P300 latencies and N100-P200, P200-N200, and N200-P300 amplitudes were measured and analyzed. P300 latencies recorded from Fz, Cz, and Pz and N200 latency recorded from Fz were significantly longer in the PD-MCI group than in the PD-Normal and the control group (respectively p < 0.001, p = 0.041). P300 amplitude recorded from Fz was significantly lower in PD-MCI group than those in the other groups (p = 0.038). While P300 was obtained in all patients in the PD-Normal and the control group, it was lost in 35% of PD-MCI patients. The results show that P300 provides a diagnostic tool for detecting PDMCI. We suggest that P300 prolongation and loss of P300 potential could be used as supportive parameter in the diagnosis of PD-MCI.

Epilepsy and stigmatization in Turkey.

Patients with epilepsy experience stigmatization quite often. Studies investigating stigmatization perceived by patients with epilepsy in Turkey are limited in number. In this study, we aimed to understand the relationship between stigmatization and psychopathology and also to identify the effects of stigmatization on the quality of life in epilepsy. Patients completed a socio-demographical data form and epilepsy information form. They were evaluated in terms of psychiatric diagnosis using SCID I and they were asked to complete SCL-90 R, Epilepsy Stigmatization Scale and SF 36. The percentages of patients who did and did not report perception of stigmatization were similar in the study group. Depression was the most common diagnosis followed by anxiety disorder. In comparison to patients who did not feel stigmatized, patients who reported perceived stigmatization had a higher frequency of generalized tonic clonic seizures and injuries during seizures and more frequently missed taking their medication. They also showed higher rates of both suicide attempts and psychopathology as evidenced by a higher rate of psychiatric diagnosis and higher score in all the subscales of SCL 90. With regard to their quality of life they were observed to be more disabled in the physical functioning, general health perception, vitality, social role functioning and mental health dimensions. A logistic regression analysis revealed that stigmatization was best predicted by three variables: history of suicide attempts, receiving a psychiatric diagnosis and higher score in SCL90PST. Our study has shown that psychopathology is a more significant predictor of stigmatization than the other variables related with seizure control.

Referred facial sensation on the hand after full face transplantation.

OBJECTIVE: Using a single patient case study, we aimed to look at the interaction between full face transplantation and subsequent somatosensory representation in the cortex. METHODS: We present a patient with full face transplantation who has recovered primary sensory modalities. The patient also has facial sensations such as touch perception in sensory examinations of the hands and fingers. RESULTS: fMRI findings show interactions between the cortical representations of the face and hand. CONCLUSION: This phenomenon is one of the well-known referred sensations and reveals how face transplantation relates to cortical plasticity.

State of the Art Approach to the Classification of Epileptic Seizures and Epilepsies.

In the light of the latest knowledge acquired from clinical and laboratory research dealing with genetic, molecular biology and neuroimaging, existing classifications were successively revised by the International League Against Epilepsy (ILAE) in 2001, 2006, and 2010. In the latest classification established in 2010, proposals articulated radical changes in terms of concepts and definitions of the previously published classifications and put forward new classifications for epileptic seizures, epilepsies and electroclinical syndromes. This review refers to the changes of the new classification with their reasons and criticisms.

An approach to geotracking patients with Alzheimer's disease.

Recently, numerous systems for geo-tracking Alzheimer's patients with dementia have been developed and reported to be functional for the purposes of security and data collection. However, studies stated possible loss of freedom and autonomy for patients, along with violations of their privacy, which may lead to loss of prestige/dignity. In this study, a geotracking system that aims to balance patients' security and their need for privacy and autonomy is proposed. The system introduces a personalized, four-level temporal geofence based tracking, warning and notification protocol that incorporates a safety check mechanism operating over Global System for Mobile Communications network.