Invariant computations in local cortical networks with balanced excitation and inhibition

[Abstract] Cortical computations critically involve local neuronal circuits. The computations are often invariant across a cortical area yet are carried out by networks that can vary widely within an area according to its functional architecture. Here we demonstrate a mechanism by which orientation selectivity is computed invariantly in cat primary visual cortex across an orientation preference map that provides a wide diversity of local circuits. Visually evoked excitatory and inhibitory synaptic conductances are balanced exquisitely in cortical neurons and thus keep the spike response sharply tuned at all map locations. This functional balance derives from spatially isotropic local connectivity of both excitatory and inhibitory cells. Modeling results demonstrate that such covariation is a signature of recurrent rather than purely feed-forward processing and that the observed isotropic local circuit is sufficient to generate invariant spike tuning

Updated Guidance Regarding The Risk ofAllergic Reactions to COVID-19 Vaccines and Recommended Evaluation and Management: A GRADE Assessment, and International Consensus Approach

This guidance updates 2021 GRADE (Grading of Recommendations Assessment, Development and Evaluation) recommendations regarding immediate allergic reactions following coronavirus disease 2019 (COVID-19) vaccines and addresses revaccinating individuals with first-dose allergic reactions and allergy testing to determine revaccination outcomes. Recent meta-analyses assessed the incidence of severe allergic reactions to initial COVID-19 vaccination, risk of mRNA-COVID-19 revaccination after an initial reaction, and diagnostic accuracy of COVID-19 vaccine and vaccine excipient testing in predicting reactions. GRADE methods informed rating the certainty of evidence and strength of recommendations. A modified Delphi panel consisting of experts in allergy, anaphylaxis, vaccinology, infectious diseases, emergency medicine, and primary care from Australia, Canada, Europe, Japan, South Africa, the United Kingdom, and the United States formed the recommendations. We recommend vaccination for persons without COVID-19 vaccine excipient allergy and revaccination after a prior immediate allergic reaction. We suggest against \u3e 15-minute postvaccination observation. We recommend against mRNA vaccine or excipient skin testing to predict outcomes. We suggest revaccination of persons with an immediate allergic reaction to the mRNA vaccine or excipients be performed by a person with vaccine allergy expertise in a properly equipped setting. We suggest against premedication, split-dosing, or special precautions because of a comorbid allergic history

Between Antagonism and Eros: The Feud as Couple Form and Netflix’s GLOW

A feud is an antagonism that is continuous and extended; “a state of prolonged mutual hostility” (OED). Historically, feuds take place between families or communities, or result from failed couples. Considered as a couple form in its own right, however, the feud is associated with aesthetic forms often coded as camp, queer, or feminized. In such popular, serialized forms, the feud must be open ended and of unforeseen futurity, for resolution brings an end to the feud as such and dissolves the couple. Thus, feuds reject normative modes of coupling (such as the nuclear family) that center harmonious or happy feelings. The article begins with the political economy of the feud through an examination of the pre-modern form of the blood feud and continues with its late-modern presence in popular culture. We rehearse the idea of the feud as it emerges from anthropology and philosophy, especially as it impacts notions of debt and alternative economies, before thinking through the contemporary “coupling” of the feud in popular culture, fandom, and, via the performance form of professional wrestling and Netflix’s GLOW

Here As Elsewhere: Thinking Theatrically/Acting Locally

This essay draws on my own discoveries and current practices as an American theatre director and academic who has been teaching theatre and performance in Aotearoa New Zealand for almost two decades. Here, I share in some depth my approach to two plays by prominent Māori playwright, Hone Kouka: Nga Tangata Toa and Waiora. These remarkable theatrical texts are deliberately modelled on Ibsenian realism while also representing the first, still most powerful experiments in bringing Māori ritual and traditional performance onto post-colonial New Zealand stages. New Zealand theatre and can serve as a platform for explorations of equivalent issues in the theatre and performance of other cultures, in particular the USA. For students (and teachers) who are not of this place, the attractions of encountering Māori theatre can be doubled: the sense of distance and difference provides room for thoughtful, critical analysis of indigenous playtexts in a distinctive, bicultural context in a way that is often not so possible on one’s home turf, and creating points of comparison between theatres and cultures allows for deeper reflections on the nature of indigenous theatre and performance more widely. Through close readings of New Zealand drama and the way its theatricality is engaged with the social realities of life here in the South Pacific, we have an opportunity to teach students how to think about the theatre more widely, to question their own theatre and performance practices and to seek new ways of representing their own social realities as they become the next generation of theatre-makers