Action–based mechanisms of attention

• Published in: Philosophical transactions of the Royal Society of London. Series B. Biological sciences Vol. 353; no. 1373; pp. 1385 - 1393
• Main Authors: Tipper, Steven P., Howard, Louise A., Houghton, George
• Format: Journal Article
• Language: English
• Published: England The Royal Society 29.08.1998
• Subjects: Action-Based Frames; Animals; Attention; Attention - physiology; Brain - physiology; Cell lines; Crossover interference; Experimentation; Hands; Humans; Inhibition; Light emitting diodes; Mental objects; Mental stimulation; Observational frames of reference; Perception; Population Vectors; Response Competition; Spatial Representation and Attention; Visual perception; Visual Perception - physiology
• ISSN: 0962-8436; 1471-2970
• DOI: 10.1098/rstb.1998.0292

Actions, which have effects in the external world, must be spatiotopically represented in the brain. The brain is capable of representing space in many different forms (e.g. retinotopic-, environment-, head- or shoulder-centred), but we maintain that actions are represented in action-centred space, meaning that, at the cellular level, the direction of movement is defined by the activity of cells. In reaching, for example, object location is defined as the direction and distance between the origin of the hand and the target. Most importantly, we argue that more than one task-relevant action can be evoked at any moment in time. Therefore, highly efficient selection processes that accurately link vision and action have had to evolve. Research is reviewed which supports the notion of action-based inhibitory mechanisms that select the target from competing distractors.