Deconstructing the functional neuroanatomy of the choroid plexus: an ontogenetic perspective for studying neurodevelopmental and neuropsychiatric disorders.

The choroid plexus (CP) is a delicate and highly vascularized structure in the brain comprised of a dense network of fenestrated capillary loops that help in the synthesis, secretion and circulation of cerebrospinal fluid (CSF). This unique neuroanatomical structure is comprised of arachnoid villi stemming from frond-like surface projections-that protrude into the lumen of the four cerebral ventricles-providing a key source of nutrients to the brain parenchyma in addition to serving as a 'sink' for central nervous system metabolic waste. In fact, the functions of the CP are often described as being analogous to those of the liver and kidney. Beyond forming a barrier/interface between the blood and CSF compartments, the CP has been identified as a modulator of leukocyte trafficking, inflammation, cognition, circadian rhythm and the gut brain-axis. In recent years, advances in molecular biology techniques and neuroimaging along with the use of sophisticated animal models have played an integral role in shaping our understanding of how the CP-CSF system changes in relation to the maturation of neural circuits during critical periods of brain development. In this article we provide an ontogenetic perspective of the CP and review the experimental evidence implicating this structure in the pathophysiology of neurodevelopmental and neuropsychiatric disorders.

Can Synchronous Online Near-Peer Teaching Offer the Same Benefits as the Face-to-Face Version When Used in Clinical Neuroanatomy Education?

COVID-19 sparked massive educational change and dictated that traditional courses rapidly transitioned online. This presented a unique challenge for anatomy, a visually orientated subject that has conventionally relied heavily on face-to-face teaching. Near-peer teaching (NPT) is one method with the potential to address this challenge. When given more responsibility, student-teachers are more likely to deliver effective teaching sessions and include the most appropriate resources for the learners. Current literature surrounding the use of NPT in both frontline and supplementary settings have already demonstrated its potential, however, its efficacy in an online environment is still largely unknown. The Faculty of Medicine at the University of Southampton has a well-established NPT programme as part of its 5 year undergraduate course (BM5). A quasi-experimental cohort study was conducted to determine whether the benefits associated with NPT are preserved when delivered online. Two cohorts of second year BM5 students received cranial nerve NPT as part of their formal clinical neuroanatomy module, one face to face (N = 150) and the other online (N = 168). Knowledge tests were undertaken by participants to assess knowledge gain and retention, and an established Likert style survey instrument was administered to assess student perceptions. Both online and face-to-face NPT sessions resulted in significant increases in student knowledge gain (p < 0.0001), yet the difference between the two was insignificant (p = 0.2432). Subsequent knowledge retention tests were also shown to be similar (p = 0.7732). Students perceived both methods of NPT delivery positively but found online NPT less enjoyable (p < 0.0001) and considered it to be a more inefficient use of time (p = 0.0035). This research suggests that online NPT can be deployed without a detrimental risk to learning when compared to traditional NPT applications in pre-clinical neuroanatomy teaching.

Current Attitudes Toward Neuroanatomy: A Comparative Cross-Sectional Survey of Neurosurgeons from the United Kingdom and Worldwide.

OBJECTIVE: How attitudes toward neuroanatomy and preferences of studying resources vary among neurosurgeons is unknown. The impact of the coronavirus disease 2019 (COVID-19) pandemic on anatomy learning habits is also yet to be elucidated. In this study, we explore these objectives, to guide the development of future neurosurgeon-tailored anatomy education and resources. METHODS: This was a 2-stage, cross-sectional study design comprising a local pilot survey followed by a structured 17-item questionnaire, distributed to both neurosurgical trainees and consultants. Grade and nationality differences in sentiment agreement were statistically compared. RESULTS: A total of 365 responses were received from 32 countries (overall response rate, 23.2%). Neuroanatomy is highly regarded among most neurosurgeons and takes a central role in their professional identity. Yet, 69% of neurosurgeons wanted to spend more time learning. Common study prompts included perceived operative complexity, lack of familiarity and teaching. Financial barriers and motivation were obstacles limiting neuroanatomy learning, more so among trainee neurosurgeons, with personal commitment barriers significantly varying with geographic location. Surgical relevance, accessibility, and image quality were important factors when selecting anatomy resources, with cost and up-to-datedness being important for juniors. The COVID-19 pandemic saw a shift toward virtual resources, particularly affecting United Kingdom-based trainees. CONCLUSIONS: Although neuroanatomy is well regarded, barriers exist that impede further neuroanatomy learning. Neurosurgical training programs should tailor anatomy education according to the seniority and background of their residents. Furthermore, resources that are surgically relevant and accessible and are of high image quality are more likely to be better used.

Working in Creative Partnership with Students to Co-Produce Neuroanatomy e-Learning Resources in a New Era of Blended Learning.

Anatomists are well placed to tackle the transition from face-to-face to blended learning approaches as a result of the rapidly forced changes brought about by Covid-19. The subject is extremely visual and has, therefore, previously been a target for the development of technology-enhanced learning initiatives over the last ten years. Today's students have come to expect the integration of technology in the classroom and remotely. They adjust quickly to the innovative use of new applications and software and have begun to integrate it within their own workflow for note taking and study aids. Given the intense drive toward blended deliveries of anatomy as a result of the Covid-19 pandemic, it is easy to picture how the benefits of working in partnership with students (in order to achieve many of these aims) would be possible, particularly in difficult subjects like neuroanatomy. In doing so, it provides anatomists with new opportunities to engage students in a way that aligns well with best practice frameworks for engaging students through partnership. The current United Kingdom guidelines set out by Advance HE (a professional membership organization for promoting excellence in higher education) strongly encourages the higher education community to seek out appropriate academic contexts where a balance of power can be struck between staff and student to create a community of practice. If such an approach can be fully embraced by anatomists, a strong argument can be made for seizing the opportunity to optimize the benefits of student partnership work in this discipline.