%0 Conference Paper %B ALIFE IX: Proceeding of the 9th international conference on the simulation and synthesis of living systems %D 2004 %T The Evolution of Affect-Related Displays, Recognition and Related Strategies %A Robert Lowe %A Lola Cañamero %A Nehaniv, Chrystopher L %A Daniel Polani %E Jordan Pollack %E Mark A Bedau %E Phil Husbands %E Takashi Ikegami %E Richard A. Watson %X This paper presents an ecologically motivated, bottom-up approach to investigating the evolution of expression, perception and related behaviour of affective internal states that complements game-theoretic studies of the evolutionary success of animal display. Our results show that the perception of displays related to affect greatly influences both the types of display produced and also the survival prospects of agents. Relative to agents that do not perceive rival agent internal state, affect perceivers prosper if the initial environment in which they reside provides numerous opportunities for interaction with other agents and resources. Conversely, where the initial environment with sparse resources does not allow for regular interaction, ability to perceive affect is not as facilitatory to survival. Furthermore, the agents evolve particular display strategies distorting the expression of affect and greatly influencing the proportion of affect perceiving to nonaffect perceiving agents over evolutionary time. %B ALIFE IX: Proceeding of the 9th international conference on the simulation and synthesis of living systems %I MIT Press %P 176–181 %@ 9780262661836 %G eng %0 Conference Paper %B From Animals to Animats 8: Proc. 8th Intl. Conf. on Simulation of Adaptive Behavior (SAB'04) %D 2004 %T Using Hormonal Feedback to Modulate Action Selection in a Competitive Scenario %A Avila-García, Orlando %A Lola Cañamero %E Stefan Schaal %E Auke Jan Ijspeert %E Aude Billard %E Sethu Vijayakumar %E John Hallam %E Jean-Arcady Meyer %X In this paper we investigate the use of hormonal feedback as a mechanism to modulate a "motivation-based," homeostatic action selection mechanism (ASM) in a robot. We have framed our study in the context of a dynamic, multirobot, competitive "two-resource" action selection problem. The introduction of competitors has important consequences for action selection. We first show how the interaction between robots introduces new forms of environmental complexity that affect their viability. Secondly, we propose a "hormone-like" mechanism that, modulating the input of the ASM, tackles these new sources of complexity. %B From Animals to Animats 8: Proc. 8th Intl. Conf. on Simulation of Adaptive Behavior (SAB'04) %I MIT Press %C Los Angeles, USA %P 243–252 %@ 9780262693417 %G eng %U https://www.researchgate.net/profile/Orlando_Avila-Garcia/publication/228958663_Using_Hormonal_Feedback_to_Modulate_Action_Selection_in_a_Competitive_Scenario/links/0deec533c8411ebe0c000000.pdf %R 10.7551/mitpress/3122.003.0031