Topic: reaction time

Human behavior is known to be idiosyncratic, yet research in neuroscience typically assumes a universal brain-behavior relationship. Here we test this assumption by estimating the level of idiosyncrasy by compare two different aspects of brain function: task- and behavior-based activation. Human subjects (N=50) perform a perceptual task with confidence inside an MRI scanner. For each subject, task-based activation strength is estimated from blocks of 8 trials. We first show that task-based activation maps are both stable within an individual (r = 0.99) and similar across people (r = 0.59). Beh

Contemporary Bayesian theories of the mind highlight the role of prediction errors as a driving force in learning processes and the updating of our models of the world and of ourselves. This process is postulated to manifest both at explicit levels (e.g., subjective responses) and at implicit levels (e.g., eye movements, reaction time) of behavior. We developed a novel associative learning task in immersive virtual reality, in which a cue probabilistically predicted the subsequent location of a target to which participants had to reach. Specifically, the current study (N = 30) examined: (1) wh

Dual-task interference is a widely observed phenomenon where the decision-making becomes less efficient (slower or less accurate) [1]. This inefficiency is proposed to be a potential interference between the two decision-making processes, but the nature and extent of this interference have been debated [2]. For example, when two decisions are required simultaneously, dual-task interference might arise due to lower signals or higher noise available for each decision. Furthermore, the suppression of the signal may be partial or complete. However, the nature and extent of dual-task interference c