Search results for "Consciousne"
showing 10 items of 351 documents
Absorption of protein in the early postoperative period in chronic conscious dogs.
1988
Postoperative alterations in amino acid exchange across the intestinal tract and in the capacity for protein absorption were investigated in a chronic canine model. Changes in postoperative splanchnic amino acid exchange consisted of a temporary decrease of total splanchnic amino acid release, including a significant reduction in alanine production, and an increase in glutamine consumption. Contrary to results under stable metabolic conditions, branched chain amino acids were also taken up by the intestine in the early postoperative period. The changes in postoperative amino acid exchange were not, however, reflected by a corresponding alteration in protein transport capacity. The absorptiv…
Dreaming and the neurobiology of self: recent advances and implications for psychiatry
2013
Throughout most of the 20th century, dreaming was considered at the center of the leading psychotherapeutic approaches to mental disorders. Psychodynamic models of the mind stemmed from Sigmund Freud's Interpretation of Dreams, according to which knowledge of the unconscious foundations of most symptoms could be enhanced by an accurate evaluation of reported dreams. Toward the end of the century, these conceptualizations were challenged by a progressive shift of perspective in the direction of neurobiologically informed, mechanistic models of brain dysfunction. The diffusion of effective psychotropic medications developed to target specific symptoms across different disorders contributed to…
Sudden Complex Hallucinations in a 14-Year-Old Girl: Schizophrenia Spectrum Disorders Versus Dissociative Disorders-The Influence of Early Life Exper…
2020
A 14-year-old girl is taken to the pediatric emergency department (ED) by her parents because of sudden complex hallucinations.She shows moderate intellectual disability without a peculiar phenotype already evaluated by neuropediatrics (normal comparative genomic hybridization array and brain magnetic resonance imaging) and most likely related to affective deprivation at the orphanage. Adopted at 20 months from China, her parents reported that on arrival she had scars, allegedly from being tied to a chair for a long time, and that although she was able to stand, she could not walk. At 22 months, she had experienced several episodes of loss of consciousness with rigidity that were attributed…
Effects of a Vibro-Tactile P300 Based Brain-Computer Interface on the Coma Recovery Scale-Revised in Patients With Disorders of Consciousness
2020
Persons diagnosed with disorders of consciousness (DOC) typically suffer from motor and cognitive disabilities. Recent research has shown that non-invasive brain-computer interface (BCI) technology could help assess these patients’ cognitive functions and command following abilities. 20 DOC patients participated in the study and performed 10 vibro-tactile P300 BCI sessions over 10 days with 8–12 runs each day. Vibrotactile tactors were placed on the each patient’s left and right wrists and one foot. Patients were instructed, via earbuds, to concentrate and silently count vibrotactile pulses on either their left or right wrist that presented a target stimulus and to ignore …
MindBEAGLE — A new system for the assessment and communication with patients with disorders of consciousness and complete locked-in syndrom
2017
Patients with disorders of consciousness (DOC) cannot reply to questions or clinical assessments using voluntary motor control, and therefore it is very difficult to assess their cognitive capabilities and conscious awareness. Patients who are locked-in (LIS) are instead fully conscious, and they can communicate with their preserved eye movements. However, when the residual oculomotor activity is also lost (e.g., patients with amyotrophic lateral sclerosis disease of very long duration), the locked-in status becomes complete (CLIS). In CLIS patients, detection of conscious awareness may become very challenging, similarly to the subjects with DOC. mindBEAGLE has a physiological testing batte…
Combined Behavioral and Mismatch Negativity Evidence for the Effects of Long-Lasting High-Definition tDCS in Disorders of Consciousness: A Pilot Study
2020
Objective: To evaluate the effects of long-term High-definition transcranial direct current stimulation (HD-tDCS) over precuneus on the level of consciousness (LOC) and the relationship between Mismatch negativity (MMN) and the LOC over the therapy period in patients with Disorders of consciousness (DOCs). Methods: We employed a with-in group repeated measures design with an anode HD-tDCS protocol (2 mA, 20 min, the precuneus) on 11 (2 vegetative state and nine minimally conscious state) patients with DOCs. MMN and Coma Recovery Scale-Revised (CRS-R) scores were measured at four time points: before the treatment of HD-tDCS (T0), after a single session of HD-tDCS (T1), after the treatment of…
Motor imagery and cortico-spinal excitability: A review
2016
International audience; Motor imagery (MI) has received a lot of interest during the last decades as its chronic or acute use has demonstrated several effects on improving sport performances or skills. The development of neuroimagery techniques also helped further our understanding of the neural correlates underlying MI. While some authors showed that MI, motor execution and action observation activated similar motor cortical regions, transcranial magnetic stimulation (TMS) studies brought great insights on the role of the primary motor cortex and on the activation of the cortico-spinal pathway during MI. After defining MI and describing the TMS technique, a short report of MI activities on…
¿Por qué realizar un examen mejora nuestro aprendizaje? Lecciones científicas y educativas del efecto del test
2011
Los exámenes se consideran como una mera evaluación del conocimiento del estudiante, y hasta el momento no se habían planteado seriamente como estrategia de aprendizaje. No en vano, los modelos tradicionales de la memoria humana consideran que los procesos de codificación son los máximos responsables del registro de información en memoria. Los procesos de recuperación, que se activan durante la realización de un examen, no deberían afectar a la información recuperada. Investigaciones recientes contradicen esta visión, y aportan nueva evidencia de cómo funciona nuestra memoria: realizar un examen sobre algo aprendido mejora nuestro aprendizaje de ese tema.
L'évolution de l'image enfantine dans "Tropismes" et "Enfance" de Nathalie Sarraute
2019
Inspired by the memories of her own difficult childhood in the shadow of the war, Nathalie Sarraute attempts to show the specificity of this period. In Tropismes (tr. Tropisms) and Enfance (tr. Childhood), she attempts to capture and present the child’s psychological experiences, at the same time refuting the stereotypes associated with this period in life. From the pen of the representative of the so-called new novel, there emerges an evolving image of a child: from a submissive/subordinate being, feeling shame or fear (because of his/her own distinctness), and lack of love, to an independent, liberated being rejecting conventions, sensible and sensitive, ready to accomplish his/her goals …