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Sensual perception in the work of Johann Georg Hamann

Language is a structured way through which human beings communicate with one another and more easily conceptualize the world around them. At the same time, each of us has unique experiences that account for variations in how we understand the words we use. To what extent do these variations occur? And what does this mean in terms of the universality of language?

In her recent book, Body Language: Corporeality, Subjectivity, and Language in Johann Georg Hamann (Peter Lang Pubilshing, Inc., 2011), Visiting Lecturer in Language and Culture Studies Julia Goesser Assaiante addresses questions like these through the perspective of 18th century German philosopher Johann Georg Hamann. The book details the central role that sensual perception plays in the work of Hamann, who was interested in “the constitution of subjectivity and the resulting relationship between subjectivity and language.”

Faculty Highlights: What specifically attracted you to the work of Johann Georg Hamann?

Julia Goesser Assaiante: I first encountered Hamann in a graduate school, and it was not love at first sight. I was tasked with presenting his essay “Aesthetica en Nuce” (aesthetics in a nutshell) to the class, and after a week of intense preparation I found myself less confident that I even understood the basics of what he was saying! But the opacity of his writing is what eventually drew me in. It is a puzzle with labyrinthian twists and turns and the deeper you go, the more you see. And it’s all by design—Hamann meant his readers to be puzzled, intrigued, infuriated even, at the withholding of meaning! But there are also moments of great beauty in his writing, and the challenge to the reader is to connect all of the disparate parts.

Faculty Highlights: To clarify, does “sensual perception” simply refer to the ways that individuals process through their senses the world around them?

Julia Goesser Assaiante: Yes, I mean it in its most concrete form. In focusing on sensual perception, Hamman is an heir to the empiricist skepticism of David Hume. Hamann argues that all we can really rely on is our sensual perception of the world, and when it comes down to it, this is something we must take on faith. Ergo, our very encounter with the world around us through our senses becomes a “leap of faith” that we are really seeing/feeling/smelling/touching/tasting the object of our inquiry.

Faculty Highlights: What do you mean by “abstraction of language” and “finite subjectivity?” How does the latter shape the former?

Julia Goesser Assaiante: Hamann views language as inherently abstract and metaphorical, in much the same way that Friedrich Nietzsche explains that when we use the word “leaf” to denote the green objects hanging on trees, we are using a catch-all abstraction that covers over the individuality of each single leaf. What Hamann—and here he prefigures Nietzsche quite closely—wishes to uncover is the lost, creative specificity of language. Hamann is arguing for a use of language that makes more room for creative and individual ways of communicating the sense of “leaf,” without using the crutch of that tired abstraction. And since our encounter with the world is conditioned by our finite, organic existence, a language that reflects more of each individual’s experiences would be more in keeping with the creative use of language for which Hamann is arguing.

Faculty Highlights: In what ways do Hamann’s ideas run counter to the Enlightenment tradition?

Julia Goesser Assaiante: Hamann was deeply suspicious of knowledge that was not empirical, and he felt that an increasing turn toward the rationalization of human affairs represented a turn from the divinely granted human qualities of individuality and creativity to the false idol of reason. Hamann feared that a purely rationalist understanding of the human condition could not account for the messiness and unpredictability of human affairs, and it is precisely that messiness which makes us so wonderfully human. One anecdote to illustrate this point is Hamann’s crusade against various proposed orthographic reforms of the time that were designed to make the German language more “rational.” Hamann argues that the moments in which written and spoken language differ, when curious formulations arise, when languages contaminate one another—these are the moments in which human language briefly comes into contact with the divine unity of word and act. Arresting that movement of language would be like gutting its divine spirit and origins.

Read a full description of Body Language here.

Hebe Guardiola-Diaz partners with UConn Health Center

Associate Professor of Biology and Neuroscience Hebe Guardiola-Diaz recently teamed up with researchers at the University of Connecticut to study the development and stability of oligodendrocytes, cells in the brain that produce the myelin required for nervous system function.

During a 2009-2010 sabbatical, Guardiola-Diaz spent time as a visiting faculty member at the UConn Health Center, working with Rashmi Bansal, a professor of neuroscience at UConn. Guardiola-Diaz spent this time focused on a process known as oligodendrocyte differentiation. Guardiola-Diaz explained, “Oligodendrocyte are cells in the brain that make myelin, which is a fatty substance that protects nerve cells and makes it possible for them to communicate efficiently with their targets.”

The deterioration of myelin around neurons can lead to a number of degenerative nerve diseases, the most common example of which is multiple sclerosis. “Because of this, it is important to understand how oligodendtocytes develop and the properties that allow them to survive in dynamic interaction with their axons,” Guardiola-Diaz said.

One result of this research partnership was an article that was co-authored by Guardiola-Diaz, Bansal, and Akihiro Ishii, a postdoctoral fellow at UConn and advisee of Bansal. The article specifically examines a signaling network of proteins inside neurons that convey information from the cell’s environment. “The paper describes selective use of the signaling proteins Erk1/2MAPK and mTOR during different stages of oligodendrocyte development,” says Guardiola-Diaz. “We’re asking questions like, ‘What is it that mTOR does inside cells that is so essential? Why does interfering with this protein disrupt the developmental process of oligodendrocytes?’”

Guardiola-Diaz and her co-authors carried out their research on isolated cells in culture under controlled conditions. She points out that colleagues in the field of neuroscience are currently carrying out similar research in vivo—or within a living organism—by using new technologies that enable scientists to disrupt genes in animal models for human disorders. “As we find out more about the signaling requirements at different stages of oligodendrocyte development, we will better understand their functional interaction with neurons in the healthy and diseased brain.”

Click here to read the abstract.

David Cruz-Uribe discusses recent publications

We recently sat down with Professor of Mathematics David Cruz-Uribe to discuss two articles that were published earlier this year, both of which were part of an extensive effort to solve what is referred to as the A2 problem in harmonic analysis. The first of these articles was co-authored by Cruz-Uribe and longtime collaborators José María Martell from the Instituto de Ciencias Matematicas in Madrid, Spain, and Carlos Peréz from the Universidad de Sevilla in Sevilla, Spain. The second paper was co-authored by Cruz-Uribe and Kabe Moen, assistant professor of mathematics at the University of Alabama. Please see the bottom of this post for full citations.

Faculty Highlights: What is the A2 problem in harmonic analysis and where did it originate?

David Cruz-Uribe: The A2 problem was first posed in the mid-1990s by Professor Robert Fefferman at the University of Chicago. He asked for the sharpest constant in certain inequalities—more precisely, in weighted Lp norm inequalities for singular integrals. The problem soon expanded to include similar questions for the other kinds of operators in harmonic analysis.

Faculty Highlights: How did the two articles you worked on address this problem?

David Cruz-Uribe: The first paper yielded a very elementary proof of the conjectured result for a special family of singular integrals—the Hilbert transform, Riesz transforms, and the Beurling-Ahlfors transform. These results were previously known, but our approach yielded a unified proof that was considerably simpler than all known proofs. The second paper extended these ideas to a family of operators called commutators.

Faculty Highlights: What was the outcome of these papers?  

Cruz-Uribe: In very basic terms, my colleagues and I vastly simplified what had previously required a 45-page proof into a couple of pages. Though we were not able to refine our argument to get the complete solution, the two papers still marked an advance over what had been done previously.

Faculty Highlights: Has any work been done on this topic since?

David Cruz-Uribe: Yes, shortly after these papers were completed the full A2 conjecture was solved by Tuomas Hytonen of the University of Helsinki using different methods. More recently, however, Andrei Lerner of Bar-Ilan University extended our approach to give a very elegant proof of the conjecture.

 

David Cruz-Uribe, José María Martell, and Carlos Peréz. “Sharp Weighted Estimates for Classical Operators.” Advances in Mathematics 229, no. 1 (January 15, 2012): 408-441.

David Cruz-Uribe. Kabe Moen. “Sharp Norm Inequalities for Commutators of Classical Operators.” Publicacions Mathematiques 56, no. 1 (2012): 147-190.

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