Attention may help solve the binding problem by shrinking receptive fields around attended objects, as suggested by Reynolds and Desimone. Attention optimizes the accuracy of neural responses coding complex stimulus properties. Neurophysiological studies show that attentional modulation and changes in stimulus luminance produce identical firing-rate modulations. Modulating perceived brightness is only one function of attention. Independent evidence that attention prevents informational overload comes from hallucinogens; a possible mechanism for how psilocybin affects attentional tracking is identified by examining how it generates drug-induced hallucinations.
Advancing scientific research on consciousness is important for addressing clinical and ethical issues in neurology and mental health. To support this field, funding priorities must be set carefully, and challenges such as job creation and media misrepresentation need to be addressed.
The authors present a symposium discussion on whether unconscious perception truly exists, highlighting disagreement on definitions and empirical methods for determining unconscious states. They argue that the controversy hinges on what is meant by key terms and how to measure unconsciousness. The piece is organized into four distinct contributions to reflect the range of ideas and evidence on this topic, aiming to foster consensus among consciousness researchers.