Gilles de la Tourette syndrome is a neuropsychiatric disorder in which cortical disinhibition has been proposed as a pathophysiological mechanism involved in the generation of tics. Tics are typically reduced during task performance and concentration. How this task-dependent reduction of motor symptoms is represented in the brain is not yet understood. The aim of the current research was to study motorcortical excitability at rest and during the preparation of a simple motor task. Transcranial magnetic stimulation was used to examine corticospinal excitability, short-interval intracortical inhibition and intracortical facilitation in a group of 11 patients with Gilles de la Tourette syndrome and age-matched healthy controls. Parameters of cortical excitability were evaluated at rest and at six points in time during the preparation of a simple finger movement. Patients with Gilles de la Tourette syndrome displayed significantly reduced short-interval intracortical inhibition at rest, while no differences were apparent for unconditioned motor evoked potential or intracortical facilitation. During the premovement phase, significant differences between groups were seen for single pulse motor evoked potential amplitudes and short-interval intracortical inhibition. Short-interval intracortical inhibition was reduced in the early phase of movement preparation (similar to rest) followed by a transition towards more inhibition. Subsequently modulation of short-interval intracortical inhibition was comparable to controls, while corticospinal recruitment was reduced in later phases of movement preparation. The present data support the hypothesis of motorcortical disinhibition in Gilles de la Tourette syndrome at rest. During performance of a motor task, patients start from an abnormally disinhibited level of short-interval intracortical inhibition early during movement preparation with subsequent modulation of inhibitory activity similar to healthy controls. We hypothesize that while at rest, abnormal subcortical inputs from aberrant striato-thalamic afferents target the motor cortex, during motor performance, motor cortical excitability most likely underlies top-down control from higher motor areas and prefrontal cortex, which override these abnormal subcortical inputs to guarantee adequate behavioural performance.

Background:In healthy subjects, preparation to move is accompanied by motor cortical disinhibi-

BackgroundAs worldwide cancer prevalence continues to increase, the challenges facing cancer care are also increasing. Various topics related to deficiencies in cancer care have been discussed repeatedly in the literature. The most frequently stated topics are the unmet psychosocial support needs of cancer patients, difficulties in multidisciplinary teamwork, difficulties in communication between physicians and patients, and issues in palliative care settings. However, there is little research regarding the views of health care providers on these topics. With the aim of gaining abundant information regarding the care of German cancer patients, this study explores the stances of psycho-oncologists, physicians, and nurses regarding the quality of cancer care.Materials and methodsSemi-structured interviews were conducted at the University Medical Center Hamburg-Eppendorf (UKE) and in different oncological outpatient offices in Hamburg; twenty-five interviews in total were conducted with health care providers. Interviews were semi-structured to gain a broad range of information on cancer care. The data were analyzed using thematic analysis by Braun and Clarke with an inductive, constant comparison approach to identify themes and categorized codes.ResultsThe following five principle themes were identified in the interviews: “psycho-oncological care”, “cooperation of health care providers”, “palliative care”, “health care provider-patient contact”, and “coordination and organization of care”. Participants seemed satisfied with the overall quality of cancer care in Germany. Nevertheless, the results showed deficiencies regarding communication among different health care providers and between health care providers and patients. Important findings in conjunction with these communication problems were a lack of psycho-oncological support, shortages in the oncology work force, language and cultural barriers, and deficient education in the communication of providers.ConclusionsThe statements of psycho-oncologists, physicians, and nurses on cancer care provide a suitable basis to conduct further focused research on the studied deficiencies in cancer care. In particular, communication in psycho-oncological care, communication within multidisciplinary teams, and health care provider-patient communication should be further explored with the aim of developing new ideas for improvements and thereby enhancing the quality of cancer care.