‚Schlachtengewitter‘: Kriegs- und Schlachtenlärm in der griechisch-römischen Antike. Eine Skizze zum Beitrag der antiken Militärgeschichte zur „Sensory History“

Kriegslärm und seine Wirkungen auf die ‚Akteure‘ sind für die Antike ein noch ungenutzter Betrachtungsgegenstand. „Sensory History“ darf als innovativer Beitrag zur Geschichtswissenschaft insgesamt gelten. Schlachtbeschreibungen thematisieren Sinneseindrücke aller Art: Die Geräusche des Krieges gehören zu den lautesten, die sich in der Menschheitsgeschichte finden lassen, der Kampf war eine multisensorische Angelegenheit mit Geschrei und Musik. Im Beitrag soll die Aufmerksamkeit auf diese Phänomene und ihre literarische Verarbeitung gelegt werden. Was bedeuteten Geräusche und Eindrücke des Krieges für die Beteiligten? Die in der Antike verbreitete Auffassung, dass „in jeder Schlacht zuerst die Augen erliegen würden“ (Tac. Germ. 43,5), ist zu relativieren! Die Kakophonie der Schlacht blieb nicht ohne Wirkung: sie bedeutete terror und konnte Menschen paralysieren!

Sensory landscape of the Russian empire in “The Letters from Russia” (1856–1857) by Juan Valera

The article considers new perspectives in working with travel notes as a historical source. Through the careful reading of “The Letters from Russia” (1856-1857) by Spanish diplomat and writer Juan Valera (1824-1905), the article examines the role of sensory impressions and their place in constructing Russia’s image. Particular attention focuses on the analysis of methods and approaches of sensory history. By applying content analysis, it was possible to identify four topics addressed by the Spanish diplomat: colours, tastes, sounds, and smells. Thanks to the interdisciplinary approach, we reconstructed the author’s percep- tion of Russia’s visual and sound landscape, his attitude to the Russian elite’s and the ordinary people’s tastes (food and drinks), the smells that he encountered during the trip. For example, the Russian empire seemed to the Spanish author brilliant, golden and silver, and its sound perception was characterized by the loud sound of local bells and melodic singing of church choirs. At the same time, a Spanish diplomat was openly disappointed with the common people’s food and its smell, and the Russian countryside, in general, seems colourless to him. The Spaniard’s idea of Russia was established under the influence of his native environment and by the St. Petersburg elite. Given the fact that the author spent most of his time in the company of the Russian elite, he managed to recreate Russia’s holistic sensual landscape only in the context of its sounds and smells. In the case of Russian food and colours, readers can observe an unfinished image that only partially reproduces the author’s vision of “folk” and “parade” Russia. For example, due to the author’s limited mobility, the text contains almost no information about the color palette of a Russian city or village. Despite this, the study of these phenomena not only revealed the basic features of the then Russian everyday life but also allowed a better understanding of the personality of Juan Valera and the way of forming his ideas.

Multiple and Dissociable Effects of Sensory History on Working-Memory Performance

Behavioural reports of sensory information are biased by stimulus history. The nature and direction of such serial-dependence biases can differ between experimental settings - both attractive and repulsive biases towards previous stimuli have been observed. How and when these biases arise in the human brain remains largely unexplored. They could occur either via a change in sensory processing itself, post-perceptual maintenance or decision-making processes, or both. Here, we analysed behavioural and magnetoencephalographic data from a working-memory task in which participants were sequentially presented with two randomly oriented gratings, one of which was cued for recall at the end of the trial. Behavioural responses showed evidence for two distinct biases: 1) a within-trial repulsive bias away from the previously encoded orientation on the same trial, and 2) a between-trial attractive bias towards the task-relevant orientation on the previous trial. Multivariate classification of stimulus orientation revealed that neural representations during stimulus encoding were biased away from the previous grating orientation, regardless of whether we considered the within- or between-trial prior orientation - despite opposite effects on behaviour. These results suggest that repulsive biases occur at the level of sensory processing and can be overturned at post-perceptual stages to result in attractive biases in behaviour.

Flexible circuit mechanisms for context-dependent song sequencing

Many sequenced behaviors, including locomotion, reaching, and vocalization, are patterned differently in different contexts, enabling animals to adjust to their current environments. However, how contextual information shapes neural activity to flexibly alter the patterning of actions is not yet understood. Prior work indicates such flexibility could be achieved via parallel motor circuits, with differing sensitivities to sensory context [1, 2, 3]; instead we demonstrate here how a single neural pathway operates in two different regimes dependent on recent sensory history. We leverage the Drosophila song production system [4] to investigate the neural mechanisms that support male song sequence generation in two contexts: near versus far from the female. While previous studies identified several song production neurons [5, 6, 7, 8], how these neurons are organized to mediate song patterning was unknown. We find that male flies sing 'simple' trains of only one syllable or mode far from the female but complex song sequences consisting of alternations between modes when near to her. We characterize the male song circuit from the brain to the ventral nerve cord (VNC), and find that the VNC song pre-motor circuit is shaped by two key computations: mutual inhibition and rebound excitability [9] between nodes driving the two modes of song. Weak sensory input to a direct brain-to-VNC excitatory pathway (via pC2 brain and pIP10 descending neurons) drives simple song far from the female. Strong sensory input to the same pathway enables complex song production via simultaneous recruitment of P1a neuron-mediated disinhibition of the VNC song pre-motor circuit. Thus, proximity to the female effectively unlocks motor circuit dynamics in the correct sensory context. We construct a compact circuit model to demonstrate that these few computations are sufficient to replicate natural context-dependent song dynamics. These results have broad implications for neural population-level models of context-dependent behavior [10] and highlight that canonical circuit motifs [11, 12, 13] can be combined in novel ways to enable circuit flexibility required for dynamic communication.

Long- and short-term history effects in a spiking network model of statistical learning

The statistical structure of the environment is often important when making decisions. There are multiple theories of how the brain represents statistical structure. One such theory states that neural activity spontaneously samples from probability distributions. In other words, the network spends more time in states which encode high-probability stimuli. Existing spiking network models implementing sampling lack the ability to learn the statistical structure from observed stimuli and instead often hard-code a dynamics. Here, we focus on how arbitrary prior knowledge about the external world can both be learned and spontaneously recollected. We present a model based upon learning the inverse of the cumulative distribution function. Learning is entirely unsupervised using biophysical neurons and biologically plausible learning rules. We show how this prior knowledge can then be accessed to compute expectations and signal surprise in downstream networks. Sensory history effects emerge from the model as a consequence of ongoing learning.

Pine fresh: the cultural and medical context of pine scent in relation to health—from the forest to the home

Pine is a familiar scent in domestic cleaning products, but how often do we relate it to its origins as an odour emanating from a tree? This article takes a sensory history approach to trace the late 19th century and early 20th century use of the pine forest as a therapeutic space, via the tuberculosis sanatoria to the use of pine scent in domestic disinfectant. By focusing on pine as experienced in this period as a microhistorical subject, this methodology will in turn allow for a detailed consideration of how historical context, and in particular medical conceptions and health concerns, can influence the creation of cultural memory. By following the trajectory of pine from its place in the forest to a commercial product used in the home, this will allow for an investigation at the intersection of environmental and medical histories and provide a framework for the consideration of the relationship of place to senses associated with concepts of health and well-being. As interest grows in the development of more effective sensory settings, in particular within healthcare, it also highlights the importance of considering the roles both cultural and personal memory play in response to various sensory stimuli.

What's the Prognosis? Longitudinal Follow-Up of Children With Sensory Processing Challenges 8-32 Years Later

Date Presented 04/8/21 Long-term follow up of 64 children with sensory processing challenges found over half scored as typical on an adult sensory history 8–32 years later. Adult anxiety and depression was common, especially in females, and was correlated with the most severe adult sensory processing challenges. This study provides preliminary prognosis information for childhood sensory processing challenges. Primary Author and Speaker: Teresa A. May-Benson Additional Authors and Speakers: Christy S. Horner, Ryan Heuer, Kerri Reid, Kara Reed, Rebecca Denton, and Kristine Ramsey

Laatokka: Suurjärven kiehtova rantahistoria

For the first time worldwide, this collection brings together analyses of the last two centuries of historical change around the shores and drainage basin of Lake Ladoga, Europe’s largest lake. The main focus of the narrative is the Northern Ladoga region, which was a Finnish administrative area between 1812 and 1944. After the Second World War, the entire shoreline of Lake Ladoga was incorporated into the northeast part of Russia’s border region, the Autonomous Republic of Karelia and the Leningrad Province. The main theme uniting this collection is how the relationship between humans and nature is shaped by industrialization and modernization in society. Other key issues include protecting nature and perspectives on particular places and times, which are reflected in the methodological and thematic choices made in this volume. The research framework set by the editor, Professor Maria Lähteenmäki, is the new lakefront history (Finn. uusi rantahistoria), focusing on approaches to environmental, economic and sensory history of lakes. To draw broad conclusions, on the one hand, the multilevel changes on the lakefront cannot be understood without knowledge of the history of the wider drainage basin, and awareness of the geopolitics of the region and the climate changes. On the other hand, the human relationship to natural waters has changed significantly in 200 years. Thinking in terms of economic benefit has gradually given way to principles of sustainable development. Lake Ladoga is also being redefined from a spatial perspective, as nationalist ownership of the region is coupled with global concern about the state of Europe’s largest lake.