Effects Of Expectation On Visual Object Processing In Humans

Effects of Expectation on Visual Object Processing in Humans

Attention, predictions and expectations, and their violation: attentional control in the human brain

In the burdened scenes of everyday life, our brains must select from among many competing inputs for perceptual synthesis - so that only the most relevant receive full attention and irrelevant (distracting) information is suppressed. At the same time, we must remain responsive to salient events outside our current focus of attention - and balancing these two processing modes is a fundamental task our brain constantly needs to solve. Both the physical saliency of a stimulus, as well as top-down predictions about imminent sensations crucially influence attentional selection and consequently the response to unexpected events. Research over recent decades has identified two separate brain networks involved in predictive top-down control and reorientation to unattended events (or oddball stimuli): the dorsal and ventral fronto-parietal attention systems of the human brain. Moreover, specific electrophysiological brain responses are known to characterize attentional orienting as well as the processing of deviant stimuli. However, many key questions are outstanding. What are the exact functional differences between these cortical attention systems? How are they lateralised in the two hemispheres? How do top-down and bottom-up signals interact to enable flexible attentional control? How does structural damage to one system affect the functionality of the other in brain damaged patients? Are there sensory-specific and supra-modal attentional systems in the brain? In addition to these questions, it is now accepted that brain responses are not only affected by the saliency of external stimuli, but also by our expectations about sensory inputs. How these two influences are balanced, and how predictions are formed in cortical networks, or generated on the basis of experience-dependent learning, are intriguing issues. In this Research Topic, we aim to collect innovative contributions that shed further light on the (cortical) mechanisms of attentional control in the human brain. In particular, we would like to encourage submissions that investigate the behavioural correlates, functional anatomy or electrophysiological markers of attentional selection and reorientation. Special emphasis will be given to studies investigating the context-sensitivity of these attentional processes in relation to prior expectations, trial history, contextual cues or physical saliency. We would like to encourage submissions employing different research methods (psychophysical recordings, neuroimaging techniques such as fMRI, MEG, EEG or ECoG, as well as neurostimulation methods such as TMS or tDCS) in healthy volunteers or neurological patients. Computational models and animal studies are also welcome. Finally, we also welcome submission of meta-analyses and reviews articles that provide new insights into, or conclusions about recent work in the field.

The Expectation Effect

“As David Robson makes plain in this compelling book, the way we think about the world can profoundly shape how we navigate it. Based in science and packed with smart advice, The Expectation Effect will expand your mind—and maybe even extend your life.” —Daniel Pink, New York Times bestselling author of When, Drive, and To Sell Is Human A journey through the cutting-edge science of how our mindset shapes every facet of our lives, revealing how your brain holds the keys to unlocking a better you What you believe can make it so. You’ve heard of the placebo effect and how sugar pills can accelerate healing. But did you know that sham heart surgeries often work just as well as placing real stents? Or that people who think they’re particularly prone to cardiovascular disease are four times as likely to die from cardiac arrest? Such is the power and deadly importance of the expectation effect—how what we think will happen changes what does happen. Melding neuroscience with narrative, science journalist David Robson takes readers on a deep dive into the many life zones the expectation effect permeates. We see how people who believe stress is beneficial become more creative when placed under strain. We see how associating aging with wisdom can add seven plus years to your life. People say seeing is believing but, over and over, Robson proves that the converse is truer: believing is seeing. The Expectation Effect is not woo-woo. You cannot think your way into a pile of money or out of a cancer diagnosis. But just because magical thinking is nonsense doesn’t mean rational magic doesn’t exist. Pointing to accepted psychology and objective physiology, Robson gives us the practical takeaways we need to improve our fitness, productivity, intelligence, and happiness. Any reader who wants to take their fate into their own hands need only pick up this book.