Role of synchronized physiological and interpersonal rhythms in typical and atypical development
Publication date: November 2016 Source:Journal of Physiology-Paris, Volume 110, Issue 4, Part B Author(s): Sylvie Tordjman, Bernard Golse, Michel Botbol (Source: Journal of Physiology Paris)
Source: Journal of Physiology Paris - December 13, 2017 Category: Physiology Source Type: research
Suicide attempts in children and adolescents: The place of clock genes and early rhythm dysfunction
Publication date: Available online 15 November 2017 Source:Journal of Physiology-Paris Author(s): Bertrand Olliac, Lisa Ouss, Annaëlle Charrier Suicide remains one of the leading causes of death among young people, and suicidal ideation and behavior are relatively common in healthy and clinical populations. Suicide risk in childhood and adolescence is often approached from the perspective of nosographic categories to which predictive variables for suicidal acts are often linked. The cascading effects resulting from altered clock genes in a pediatric population could participate in biological rhythm abnormalities and ...
Source: Journal of Physiology Paris - November 24, 2017 Category: Physiology Source Type: research
Dyssynchrony and perinatal psychopathology impact of child disease on parents-child interactions, the paradigm of Prader Willi syndrom
Conclusion Dys-synchrony can be induced by children’s pathology as well as parental pathology with emotional and developmental impact in the both cases. The PWS paradigm shows us the necessity to sustain early parents-child relationship to avoid establishment of a negative transactional pattern of interaction that can impact child’s development. (Source: Journal of Physiology Paris)
Source: Journal of Physiology Paris - September 2, 2017 Category: Physiology Source Type: research
Creating a ‘social zeitgeber’ to synchronize family emotional rhythms: A new therapeutic approach in child and adolescent psychiatry
Publication date: Available online 16 August 2017 Source:Journal of Physiology-Paris Author(s): Matthias Wiss, Sylvie Tordjman A family can be viewed as a system respecting the principle of homeostasis and therefore considered as a system in equilibrium or out of equilibrium, or even both simultaneously or consecutively. Within a family system, there are oscillatory phenomena and synchronization of the emotional, behavioral and relational rhythms of each member of the family system as well as synchronization of this system with others. A disruption of family synchronies, consisting of successive desynchronizations and ...
Source: Journal of Physiology Paris - August 18, 2017 Category: Physiology Source Type: research
Key considerations in designing a speech brain-computer interface
Publication date: Available online 7 August 2017 Source:Journal of Physiology-Paris Author(s): Florent Bocquelet, Thomas Hueber, Laurent Girin, Stéphan Chabardès, Blaise Yvert Restoring communication in case of aphasia is a key challenge for neurotechnologies. To this end, brain-computer strategies can be envisioned to allow artificial speech synthesis from the continuous decoding of neural signals underlying speech imagination. Such speech brain-computer interfaces do not exist yet and their design should consider three key choices that need to be made: the choice of appropriate brain regions to record neural act...
Source: Journal of Physiology Paris - August 7, 2017 Category: Physiology Source Type: research
Links between early child maltreatment, mental disorders, and cortisol secretion anomalies
Publication date: Available online 13 July 2017 Source:Journal of Physiology-Paris Author(s): Guillaume Bronsard, Pascal Auquier, Laurent Boyer Early child maltreatment has been widely associated with the development of mental disorders in both childhood and adulthood. However, such association cannot be systematically established, as only few factors are observed regularly, such as high prevalence of comorbidities and externalized disorders. Similarly, the association between early abuse and cortisol secretion anomalies has been well-documented. Whereas early hypercortisolism followed by hypocortisolism was often des...
Source: Journal of Physiology Paris - July 13, 2017 Category: Physiology Source Type: research
A developmental and clinical perspective of rhythmic interpersonal coordination: From mimicry toward the interconnection of minds
Publication date: Available online 4 July 2017 Source:Journal of Physiology-Paris Author(s): Jean Xavier, Julien Magnat, Alain Sherman, Soizic Gauthier, David Cohen, Laurence Chaby Imitation plays a critical role in the development of intersubjectivity and serves as a prerequisite for understanding the emotions and intentions of others. In our review, we consider spontaneous motor imitation between children and their peers as a developmental process involving repetition and perspective-taking as well as flexibility and reciprocity. During childhood, this playful dynamic challenges developing visuospatial abilities ...
Source: Journal of Physiology Paris - July 5, 2017 Category: Physiology Source Type: research
Are circadian rhythms new pathways to understand Autism Spectrum Disorder?
Publication date: Available online 20 June 2017 Source:Journal of Physiology-Paris Author(s): M-M. Geoffray, A. Nicolas, M. Speranza, N. Georgieff Autism Spectrum Disorder (ASD) is a frequent neurodevelopmental disorder. ASD is probably the result of intricate interactions between genes and environment altering progressively the development of brain structures and functions. Circadian rhythms are a complex intrinsic timing system composed of almost as many clocks as there are body cells. They regulate a variety of physiological and behavioral processes such as the sleep-wake rhythm. ASD is often associated with sleep...
Source: Journal of Physiology Paris - June 20, 2017 Category: Physiology Source Type: research
Absence seizure susceptibility correlates with pre-ictal β oscillations
Publication date: Available online 3 June 2017 Source:Journal of Physiology-Paris Author(s): Jordan M. Sorokin, Jeanne T. Paz, John R. Huguenard Absence seizures are generalized, cortico-thalamo-cortical (CTC) high power electroencephalographic (EEG) or electrocorticographic (ECoG) events that initiate and terminate suddenly. ECoG recordings of absence seizures in animal models of genetic absence epilepsy show a sudden spike-wave-discharge (SWD) onset that rapidly emerges from normal ECoG activity. However, given that absence seizures occur most often during periods of drowsiness or quiet wakefulness, we wondered whet...
Source: Journal of Physiology Paris - June 4, 2017 Category: Physiology Source Type: research
Functional monitoring of peripheral nerves from electrical impedance measurements
In this study, we investigate the feasibility of using electrical impedance (EI) measurements as an in vivo functional nerve monitoring technique. The monitoring paradigm includes the synchronized recording of both the evoked endogenous activity as compound action potentials (CAP) and the superimposed sine signal from the EI probe. Measurements were conducted on the sciatic nerve of rodents, chosen for its branchings towards the peroneal and tibial nerves, with both mono- and multi-contact per section electrodes. During stimulation phases, recordings showed CAP with consistent fiber conduction velocities. During coupled ph...
Source: Journal of Physiology Paris - June 3, 2017 Category: Physiology Source Type: research
From point process observations to collective neural dynamics: Nonlinear Hawkes process GLMs, low-dimensional dynamics and coarse graining
Publication date: Available online 25 May 2017 Source:Journal of Physiology-Paris Author(s): Wilson Truccolo This review presents a perspective on capturing collective dynamics in recorded neuronal ensembles based on multivariate point process models, inference of low-dimensional dynamics and coarse graining of spatiotemporal measurements. A general probabilistic framework for continuous time point processes reviewed, with an emphasis on multivariate nonlinear Hawkes processes with exogenous inputs. A point process generalized linear model (PP-GLM) framework for the estimation of discrete time multivariate nonlinear Haw...
Source: Journal of Physiology Paris - May 26, 2017 Category: Physiology Source Type: research
Altered circadian patterns of salivary cortisol in individuals with schizophrenia: A critical literature review
In conclusion, this article highlights the interest of studying the cortisol circadian rhythms in schizophrenia and opens the perspective to identify high risk individuals for schizophrenia by measuring circadian patterns of salivary cortisol. (Source: Journal of Physiology Paris)
Source: Journal of Physiology Paris - May 17, 2017 Category: Physiology Source Type: research
Disruption of adolescents ’ circadian clock: The vicious circle of media use, exposure to light at night, sleep loss and risk behaviors
Publication date: Available online 12 May 2017 Source:Journal of Physiology-Paris Author(s): Yvan Touitou, David Touitou, Alain Reinberg Although sleep is a key element in adolescent development, teens are spending increasing amounts of time online with health risks related to excessive use of electronic media (computers, smartphones, tablets, consoles…) negatively associated with daytime functioning and sleep outcomes. Adolescent sleep becomes irregular, shortened and delayed in relation with later sleep onset and early waking time due to early school starting times on weekdays which results in rhythm desynchroniza...
Source: Journal of Physiology Paris - May 13, 2017 Category: Physiology Source Type: research
Early behavioural facilitation by temporal expectations in complex visual-motor sequences
Publication date: Available online 18 March 2017 Source:Journal of Physiology-Paris Author(s): Simone G. Heideman, Freek van Ede, Anna C. Nobre In daily life, temporal expectations may derive from incidental learning of recurring patterns of intervals. We investigated the incidental acquisition and utilisation of combined temporal-ordinal (spatial/effector) structure in complex visual-motor sequences using a modified version of a serial reaction time (SRT) task. In this task, not only the series of targets/responses, but also the series of intervals between subsequent targets was repeated across multiple presentations...
Source: Journal of Physiology Paris - March 18, 2017 Category: Physiology Source Type: research
Retrospectively supervised click decoder calibration for self-calibrating point-and-click brain –computer interfaces
Publication date: Available online 8 March 2017 Source:Journal of Physiology-Paris Author(s): Beata Jarosiewicz, Anish A. Sarma, Jad Saab, Brian Franco, Sydney S. Cash, Emad N. Eskandar, Leigh R. Hochberg Brain-computer interfaces (BCIs) aim to restore independence to people with severe motor disabilities by allowing control of acursor on a computer screen or other effectors with neural activity. However, physiological and/or recording-related nonstationarities in neural signals can limit long-term decoding stability, and it would be tedious for users to pause use of the BCI whenever neural control degrades to per...
Source: Journal of Physiology Paris - March 16, 2017 Category: Physiology Source Type: research
