Cartography I: Mapping narrative cartography

This report focuses on the growing interest in the relationship between maps, narratives and meta-narratives. Following a brief historical contextualization of these relationships, this report explores their current state in the Geoweb era. Using the distinction between story maps and grid maps as an analytical framework, I review emerging issues around the extensive use of technologies and online mapping services (i.e. Google maps) to convey stories and to produce new ones. Drawing on literature in film studies, literary studies, visual arts, computer science and communication I also emphasize the emergence of new forms of spatial expressions interested in providing different perspectives about places and about stories associated to places. In sum, I argue that mapping both vernacular knowledge and fiction is central understanding places in depth

Knowing the city: maps, mobility and urban outreach work

This article is concerned with the relationship between (pedestrian) movement and (local) knowledge. Drawing upon ethnography conducted with a team of urban outreach workers, the article considers mapping, and specifically the use of Global Positioning System technology, as a method with which to document the spatial distribution of the team’s practice as they search for and locate their rough-sleeping client group. Outreach workers are experts in the terrain in which they operate; maps of their movements, therefore, might be said to entail a mapping of knowledge, enacted in movement, and our informants do not move randomly, but knowledgeably. Our argument, however, grounded in an attention to the way in which knowledge and movement combine in the street-level practices of urban outreach, provides a foundation for a critique of mapping as an analytic practice in and through which relations of knowing and going can be shown and understood

Evidence for striatal dopamine release during a video game

Dopaminergic neurotransmission may be involved in learning, reinforcement of behaviour, attention, and sensorimotor integration1,2. Binding of the radioligand 11C-labelled raclopride to dopamine D2 receptors is sensitive to levels of endogenous dopamine, which can be released by pharmacological challenge3, 4, 5, 6, 7, 8. Here we use 11C-labelled raclopride and positron emission tomography scans to provide evidence that endogenous dopamine is released in the human striatum during a goal-directed motor task, namely a video game. Binding of raclopride to dopamine receptors in the striatum was significantly reduced during the video game compared with baseline levels of binding, consistent with increased release and binding of dopamine to its receptors. The reduction in binding of raclopride in the striatum positively correlated with the performance level during the task and was greatest in the ventral striatum. These results show, to our knowledge for the first time, behavioural conditions under which dopamine is released in humans, and illustrate the ability of positron emission tomography to detect neurotransmitter fluxes in vivo during manipulations of behaviour