Publications by authors named "Katie Lancaster"

Environments are dynamic and complex. Some children experience more predictable early life environments than others. Here, we consider how moment-by-moment complexity and predictability in our early environments influence development.

View Article and Find Full Text PDF

Objective/background: Preference for extended-release, once-nightly sodium oxybate (ON-SXB, FT218) vs twice-nightly immediate-release (IR) oxybate was assessed in participants switching from IR oxybate to ON-SXB in an open-label/switch study, RESTORE (NCT04451668).

Patients/methods: Participants aged ≥16 years with narcolepsy who completed the phase 3 REST-ON trial, were oxybate-naive, or were on a stable IR oxybate dose (≥1 month) were eligible for RESTORE. For participants who switched from twice-nightly dosing to ON-SXB, initial doses were closest or equivalent to their previous nightly IR oxybate dose.

View Article and Find Full Text PDF

Background: Over a third of people with Multiple Sclerosis (PwMS) struggle with poor mental health, which exacerbates physical symptoms and complicates clinical treatment. To address this, we tested the efficacy of an interpersonal emotion regulation intervention: this intervention seeks to improve mental health by teaching participants to use emotion regulation strategies which leverage social support (e.g.

View Article and Find Full Text PDF

Objective: Facial affect recognition deficits have been noted in persons with MS, however there is no treatment for these impairments. We investigated the efficacy of the Emotional Processing Intervention (EMOPRINT), a 12-session behavioral intervention teaching facial affect recognition skills and mimicry to improve facial affect recognition abilities in persons with MS.

Methods: This double blind, placebo-controlled, randomized clinical trial with two time points (pre-treatment; post-treatment) included 36 participants with clinically definite MS, 21 in the treatment group and 15 in the placebo control group.

View Article and Find Full Text PDF

Background: The fasciocutaneous inferior gluteal artery perforator (IGAP) has been previously demonstrated to be a robust reconstructive choice after abdominoperineal excision (APE), with comparably low morbidity relative to other flaps. In patients who undergo concurrent vaginectomy, we demonstrate in this retrospective cohort study how IGAP modification allows simultaneous vaginal reconstruction with a favourable complication profile and long-term return to sexual activity.

Methods: Oncological resection was completed with the patient prone.

View Article and Find Full Text PDF

Background: Facial pressure ulcers are a rare yet significant complication. National Institute for Health and Care Excellence (NICE) guidelines recommend that patients should be risk-assessed for pressure ulcers and measures instated to prevent such complication. In this study, we report case series of perioral pressure ulcers developed following the use of two devices to secure endotracheal tubes in COVID-19 positive patients managed in the intensive care setting.

View Article and Find Full Text PDF

Impairments in cognitive processing related to social understanding and communication (i.e., "social cognition") are well documented after moderate or severe traumatic brain injury (TBI) and can contribute to negative functional outcome.

View Article and Find Full Text PDF

Moderate-severe traumatic brain injury (TBI) may result in difficulty with emotion recognition, which has negative implications for social functioning. As aspects of social cognition have been linked to resting-state functional connectivity (RSFC) in the default mode network (DMN), we sought to determine whether DMN connectivity strength predicts emotion recognition and level of social integration in TBI. To this end, we examined emotion recognition ability of 21 individuals with TBI and 27 healthy controls in relation to RSFC between DMN regions.

View Article and Find Full Text PDF

Objective: Social cognitive deficits are an important consequence of multiple sclerosis (MS), yet our understanding of how these deficits manifest in progressive MS is currently limited. To this end, we examined theory of mind (ToM) ability in a sample of individuals with progressive MS using an ecologically valid virtual assessment tool that allows for delineation of cognitive ToM (inferring thoughts and intentions of others) from affective ToM (inferring emotions of others).

Methods & Results: We compared 15 individuals with progressive MS and 15 healthy controls on their ToM ability using the Virtual Assessment of Mentalising Ability.

View Article and Find Full Text PDF

Objective: Individuals with traumatic brain injury (TBI) can experience social isolation, which is damaging to well-being and counterproductive to successful rehabilitation. It has been proposed that social cognitive deficits that commonly result from TBI may contribute to weakened social integration. However, the consequences of specific social cognitive deficits in TBI are still being delineated.

View Article and Find Full Text PDF

Emerging research indicates that in addition to physical and cognitive deficits, individuals with multiple sclerosis (MS) may also have impairments in social cognition, such as facial affect recognition and Theory of Mind (ToM). However, there is little research into how social cognition impairments relate to other domains in MS, such as mood and fatigue levels. The current study investigated whether social cognitive ability is associated with fatigue, depressive symptoms and anxiety in MS.

View Article and Find Full Text PDF

Oxytocin has anxiolytic properties whose mechanisms of action are still being identified. DNA methylation in the promoter region of the oxytocin receptor gene (OXTR), an epigenetic modification that putatively reflects a downtuning of the oxytocin system, has previously been implicated in the regulation of fear-related responses through the amygdala. In this study, we attempted to characterize the relationship between methylation of OXTR and anxiogenesis using two distinct endophenotypes: autonomic nervous system activity and subcortical brain structure.

View Article and Find Full Text PDF

Background: Oxytocin is anxiolytic, and administration of synthetic oxytocin in humans reduces amygdala reactivity to negative stimuli. However, it is unknown whether endogenous oxytocin levels-which are heritable and stable across time-attenuate anxiety via similar mechanisms.

Methods: In this study, we used plasma assays and structural and functional neuroimaging to examine potential anxiolytic effects of endogenous oxytocin in 73 participants.

View Article and Find Full Text PDF

Neuroimaging epigenetics is an interdisciplinary application of epigenetics to cognitive neuroscience that seeks to identify molecular and neural predictors of human behavior. This approach can be sensitive to the dynamic interaction between biological predisposition and environmental influences, and is potentially more informative than an approach using static genetic code. Recent work in this field has generated considerable enthusiasm, yet caution is warranted since any novel cross-disciplinary approach lacks a set of established conventions or standards.

View Article and Find Full Text PDF

Response to stress is dysregulated in psychosis (PSY). fMRI studies showed hyperactivity in hypothalamus (HYPO), hippocampus (HIPP), amygdala (AMYG), anterior cingulate (ACC), orbital and medial prefrontal (OFC; mPFC) cortices, with some studies reporting sex differences. We predicted abnormal steroid hormone levels in PSY would be associated with sex differences in hyperactivity in HYPO, AMYG, and HIPP, and hypoactivity in PFC and ACC, with more severe deficits in men.

View Article and Find Full Text PDF

The neuropeptide oxytocin plays a critical role in social cognition and behavior. A number of studies using intranasal administration have demonstrated that oxytocin improves social perception. However, little is known about the relationship between individual differences in endogenous levels of oxytocin and social cognition.

View Article and Find Full Text PDF

Many regions within stress neurocircuitry, including the anterior hypothalamus, amygdala, hippocampus, and medial prefrontal cortex, are densely populated with sex steroid receptors. Substantial evidence from animal studies indicates that the gonadal hormone 17β-estradiol (E₂) impacts the structure and function of these regions, but human studies are limited. Characterizing estradiol's role in stress circuitry in vivo in humans may have important clinical implications given the comorbidity between major depressive disorder (MDD), stress circuitry dysfunction and endocrine dysregulation.

View Article and Find Full Text PDF

Objectives: To improve measurement of discrimination for health research, we sought to address the concern that explicit self-reports of racial discrimination may not capture unconscious cognition.

Methods: We used 2 assessment tools in our Web-based study: a new application of the Implicit Association Test, a computer-based reaction-time test that measures the strength of association between an individual's self or group and being a victim or perpetrator of racial discrimination, and a validated explicit self-report measure of racial discrimination.

Results: Among the 442 US-born non-Hispanic Black participants, the explicit and implicit measures, as hypothesized, were weakly correlated and tended to be independently associated with risk of hypertension among persons with less than a college degree.

View Article and Find Full Text PDF