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Search Results: 1 - 10 of 814 matches for " Heiko Hecht "
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Where Do We Stand on Locating the Self?  [PDF]
Jakub Limanowski, Heiko Hecht
Psychology (PSYCH) , 2011, DOI: 10.4236/psych.2011.24049
Abstract: The subjective location of the Self in the body is a traditionally problematic question, and it can only be addressed from the first-person perspective. However, this does not preclude an empirical approach to the question. In the present study, we examined whether a large sample of participants would be willing and able to determine the perceived location of their Self. The main goal was to assess current beliefs about the nature of the Self and its assumed relation to specific bodily organs. Eighty-seven participants indicated the center of their Self by placing crosshairs on human silhouettes and abstract, non-human silhouettes with varying anatomy. Results show a clearly dominant role of the brain and the heart for Self-location in humans, but only of the brain for Self-location in abstract creatures. Moreover, results reveal that people believe there is one single point inside the human body where their Self is located.
Functional Neuroanatomy of Time-To-Passage Perception  [PDF]
Yansong Geng, Elif M. Sikoglu, Heiko Hecht, Lucia M. Vaina
Journal of Behavioral and Brain Science (JBBS) , 2018, DOI: 10.4236/jbbs.2018.811039
Abstract: The time until an approaching object passes the observer is referred to as time-to-passage (TTP). Accurate judgment of TTP is critical for visually guided navigation, such as when walking, riding a bicycle, or driving a car. Previous research has shown that observers are able to make TTP judgments in the absence of information about local retinal object expansion. In this paper we combine psychophysics and functional MRI (fMRI) to investigate the neural substrate of TTP processing. In a previous psychophysical study, we demonstrated that when local retinal expansion cues are not available, observers take advantage of multiple sources of information to judge TTP, such as optic flow and object retinal velocities, and integrate these cues through a flexible and economic strategy. To induce strategy changes, we introduced trials with motion but without coherent optic flow (0% coherence of the background), and trials with coherent, but noisy, optic flow (75% coherence of the background). In a functional magnetic resonance imaging (fMRI) study we found that coherent optic flow cues resulted in better behavioral performance as well as higher and broader cortical activations across the visual motion processing pathway. Blood oxygen-level-dependent (BOLD) signal changes showed significant involvement of optic flow processing in the precentral sulcus (PreCS), postcentral sulcus (PostCS) and middle temporal gyrus (MTG) across all conditions. Not only highly activated during motion processing, bilateral hMT areas also showed a complex pattern in TTP judgment processing, which reflected a flexible TTP response strategy.
Crossing a Multi-Lane Street: Irrelevant Cars Increase Unsafe Behavior
Robin Baurès,Oberfeld Daniel,Hecht Heiko,Cavallo Viola
BIO Web of Conferences , 2011, DOI: 10.1051/bioconf/20110100009
Abstract: Before crossing a road or an intersection, road users have to determine among the surrounding traffic whether or not they have enough time to safely complete their maneuver. Temporal judgments have been investigated for single cars approaching an intersection, however, close to nothing is known about how street-crossing decisions are being made when several vehicles are simultaneously approaching in two adjacent lanes. We conducted a simulator experiment in which observers indicated whether or not they had enough time to complete safe street crossing. Traffic gaps were presented either with a single or two oncoming cars on different lanes, in such a way that in all cases, only the shortest gap was taskrelevant. Nevertheless, street-crossing decisions were found to be also influenced by the task-irrelevant longer gap, observers being more willing to cross the street when having to judge two gaps simultaneously compared to only one gap. Consequences of this unsafe behavior are discussed.
Past, Present and Future: Urgency of Dealing with Climate Change  [PDF]
Alan D. Hecht
Atmospheric and Climate Sciences (ACS) , 2014, DOI: 10.4236/acs.2014.45069
Abstract:

This paper gives an historic perspective on 10 critical phases and actions in advancing an understanding of climate change and taking appropriate domestic and international action. Credit goes to atmospheric scientists for their committed efforts to understand, model and measure the impacts of climate change. Today, greenhouse gases are at a record level and little doubt remains that greenhouse gases (GHG) warm the atmosphere and that human-made climate change is real. Recognizing the urgency of responding to climate change, the 2013 US Climate Action Plan aims to cut carbon emissions and prepare to deal effectively with the economic, social, and environmental impacts of climate change. Many US states, Tribes, and local communities have also begun to take action to reduce GHG emissions and adapt to the impact of climate change, especially on disadvantaged communities. While recognition of the urgency of action on climate change is growing in government and in large parts of the business and financial sector, it has taken over 40 years to get to this point. While an understanding of the reality and impact of climate change has grown, significant efforts to reduce the concentration of greenhouse gases in the atmosphere and stabilize global warming have not occurred. The problem that society faces is not the absence of scientific knowledge, but rather the need to reduce GHG emissions and create resilient and adaptive responses to climate change. This paper concludes that future successes will need more effective collaboration between government, business, and society to address climate change and greater public understanding of the impacts of climate change on human health and economic well-being.

De caza con el rey(1)
Hecht,Romy;
ARQ (Santiago) , 2010, DOI: 10.4067/S0717-69962010000100015
Abstract: the landscape is intervened to return to its natural state, with the objective of being utilized by the kings in hunting season. species of flora and fauna are forcibly introduced in a place to create gardens that we now recognize as parks. the different layers of history are superimposed and configure a particular terrain.
Trazado, paisaje y territorio: Cerro Sombrero y la arquitectura del petróleo en Magallanes
Hecht,Romy;
ARQ (Santiago) , 2002, DOI: 10.4067/S0717-69962002005100016
Abstract: this article seeks to highlight and analyse cerro sombrero as a foundation pattern in magallanes, not in the sense of occupying a territory by a repeated formal model. cerro sombrero shows an imposed and deliberated order in a territory without signals nor possibilities of occupation. at the end, the rescue of the southernmost modern architecture of the world
Trazado, paisaje y territorio: Cerro Sombrero y la arquitectura del petróleo en Magallanes
Romy Hecht
ARQ , 2002,
Abstract: Este artículo presenta al campamento petrolero de Cerro Sombrero como un patrón fundacional en Magallanes; patrón no desde el punto de vista de ocupar el territorio en base a la repetición de un modelo formal, sino como un orden deliberado e impuesto a un territorio que, como veremos, no otorga se ales de ocupación. A la larga, un rescate patrimonial de la construcción de arquitectura moderna más al sur del mundo This article seeks to highlight and analyse Cerro Sombrero as a foundation pattern in Magallanes, not in the sense of occupying a territory by a repeated formal model. Cerro Sombrero shows an imposed and deliberated order in a territory without signals nor possibilities of occupation. At the end, the rescue of the southernmost modern architecture of the world
Neither home nor decoration
Romy Hecht
ARQ , 2002,
Abstract:
Ni vivienda, ni decoración
Romy Hecht
ARQ , 2002,
Abstract:
De caza con el rey(1)
Romy Hecht
ARQ , 2010,
Abstract: El paisaje es intervenido para volver a lo natural, con el objetivo de ser utilizado por los reyes en las temporadas de caza. Forzadamente se introducen especies de flora y fauna en un lugar para configurar jardines que hoy reconocemos como parques. Las diferentes capas de la historia se superponen y configuran un territorio particular. The landscape is intervened to return to its natural state, with the objective of being utilized by the kings in hunting season. Species of flora and fauna are forcibly introduced in a place to create gardens that we now recognize as parks. The different layers of history are superimposed and configure a particular terrain.
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