Le regard d’ailleurs : les constructions utopiques de la « différence »

L'évidence du concept de la « différence » entre hommes et femmes imprègne le discours féministe contemporain. Pour aborder ce concept de façon critique, j'utilise un corpus littéraire qui nous aide à voir l'évident, le non-remarqué et l'habituel dans nos positions sexuales : les fictions utopiques en forme d'inversion des rôles sexuaux. Après une discussion détaillée de ces textes, je suggère que la vision utopique de l'écrivaine anglaise Katharine Burdekin pointe en direction d'un sentier qui pourrait nous mener hors des interminables débats sur l'« essentialisme » et le « constructivisme social » comme explications de la « différence ».The obviousness of the concept of "difference" between men and women permeates contemporary feminist discourse, which has devoted much energy to explicating the sources of this " difference ". In order to take a critical look at this concept, I draw on a body of literature that helps us to see the obvious, the unnoticed, the habitual in our gendered positions : Utopian fictions cast as sex-role reversals. After discussing these texts in some detail, I argue that the Utopian vision of the british writer Katharine Burdekin hints at a path that can lead us out of the endless debates over "essentialism" and "social constructionism" as explanations of "difference". Ce texte a pour objet l'évident, et la façon dont les choses que l'on considère évidentes glissent doucement dans l'invisibilité. Je soutiendrai que c'est précisément l'évident qui doit être rendu visible, et qu'afin de récupérer l'évident nous devons trouver un point de vue, un lieu d'où l'évident perd son évidence, est délesté de l'attribut du "cela va sans dire"

Orienting Attention Based on Long-Term Memory Improves Perceptual Discriminations

The role of attentional orienting in daily life is to selectively deploy both behavioural and neural resources towards events, based on continually changing task goals and expectations, in order to optimize performance. In the following experiment, we show that attentional orienting is influenced by long-term memories in a perceptual discrimination task. In the learning phase, participants were trained on 120 ecologically valid natural scenes, of which 80 contained a target. Their task was to locate the target (a small key) on the screen by clicking on it with the mouse. One or two days later, participants completed a cued perceptual discrimination task. The same scenes that were studied before, but without any targets, were presented as cues (50 ms duration), followed, after a delay (450ms), by the scene again with or without the target (200ms). Participants discriminated covertly whether the key was present or absent from the second scene. There were three conditions: valid (key in learning and discrimination task was in same location), invalid (key in learning and discrimination task were in different location) and neutral (there was no key in learning phase). Behavioural results indicated that memory-guided attention benefits both the sensitivity (d’) and speed of target identification within natural scenes. A replication of the study is being carried out with event-related potentials to chart the neural modulations that accompany the perceptual enhancements observed behaviourally

Text-based document geolocation and its application to the digital humanities

This dissertation investigates automatic geolocation of documents (i.e. identification of their location, expressed as latitude/longitude coordinates), based on the text of those documents rather than metadata. I assert that such geolocation can be performed using text alone, at a sufficient accuracy for use in real-world applications. Although in some corpora metadata is found in abundance (e.g. home location, time zone, friends, followers, etc. in Twitter), it is lacking in others, such as many corpora of primary-source documents in the digital humanities, an area to which document geolocation has hardly been applied. To this end, I first develop methods for accurate text-based geolocation and then apply them to newly-annotated corpora in the digital humanities. The geolocation methods I develop use both uniform and adaptive (k-d tree) grids over the Earth’s surface, culminating in a hierarchical logistic-regression-based technique that achieves state of the art results on well-known corpora (Twitter user feeds, Wikipedia articles and Flickr image tags). In the second part of the dissertation I develop a new NLP task, text-based geolocation of historical corpora. Because there are no existing corpora to test on, I create and annotate two new corpora of significantly different natures (a 19th-century travel log and a large set of Civil War archives). I show how my methods produce good geolocation accuracy even given the relatively small amount of annotated data available, which can be further improved using domain adaptation. I then use the predictions on the much larger unannotated portion of the Civil War archives to generate and analyze geographic topic models, showing how they can be mined to produce interesting revelations concerning various Civil War-related subjects. Finally, I develop a new geolocation technique for text-only corpora involving co-training between document-geolocation and toponym- resolution models, using a gazetteer to inject additional information into the training process. To evaluate this technique I develop a new metric, the closest toponym error distance, on which I show improvements compared with a baseline geolocator.Linguistic

The Versatile Wayfinder: Prefrontal Contributions to Spatial Navigation

Highlights: Navigation is a behavior fundamental to all mobile animals, and incorporates various cognitive functions, including memory, planning, decision-making, and updating models of the world. Historically, the neural underpinnings of flexible navigation have focused on the hippocampal formation, but recent evidence suggests that regions of the prefrontal cortex (PFC) are crucial to many aspects of navigation, especially when environments are complex or dynamic. This review summarizes what we know from recent human, non-human primate, and rodent studies, proposing a novel perspective that incorporates our knowledge across species and brain regions seeking to avoid tunnel vision in understanding the multifaceted behavior in navigation