Background The speed and accuracy of decision-making have a well-known trading relationship: hasty decisions are more prone to errors while careful, accurate judgments take time. Despite the pervasiveness this speed-accuracy trade-off (SAT) in decision-making, its neural basis is still unknown. Methodology/Principal Findings Using functional magnetic resonance imaging (fMRI) we show that emphasizing perceptual decision at expense lowers amount evidence-related activity lateral prefrontal...

McCormick (1997) concluded that peripheral cues presented below a threshold of awareness could nevertheless attract attention because they facilitated target processing near the cue shortly after its presentation. Yet, whereas an exogenous shift typically exhibits biphasic pattern (initial facilitation followed by inhibition return [IOR]), at late cue-target onset asynchronies, IOR was not observed McCormick. In our study, targets requiring detection response were preceded masked and...

Precision and general computer mouse aiming performance by right-handers (RH-RM) left-handers with right-handed experience (LH-RM) left-handed (LH-LM) were compared. A number of measures, such as reaction time, time to reach a target, click on cursor trajectory, analyzed. Superficially, specific hand seemed dictate asymmetries, but closer look revealed interactions between preference performance. That finding has implications for theories handedness. In addition, precision directional the...

Two sensorimotor tasks that share neither sensory nor motor modality can interfere with one another when they are performed simultaneously. A possible cause for this interference is the recruitment of common brain regions by these two tasks, thereby creating a bottleneck information processing. This hypothesis predicts such "bottleneck" would be activated each task even separately. To test prediction, we sought to identify, fMRI, commonly input output. One group subjects was scanned while in...

Inhibition of return (IOR) refers to a mechanism that results in performance disadvantage typically observed when targets are presented at location once occupied by cue. Although the time course phenomenon--from cue target--has been well studied, effect--from target response--is unknown. In 2 experiments, effect IOR upon sensitivity and response criterion under different levels speed stress was examined. go/no-go choice reaction tasks, had least distinct effects on information processing....

Emotional responses have specific electroencephalographic (EEG) signatures that arise within a few hundred milliseconds post-stimulus onset. In this experiment, EEG measures were employed to assess for transfer of emotional functions across three 3-member equivalence classes in an extension Dougher, Auguston, Markham, Greenway, & Wulfert's (1994) seminal work on the arousal functions. Specifically, 12 human participants trained following match-to-sample performances A1 = B1, A2 B2, A3 B3 and...

Inhibition of return (10R) refers to a mechanism that slows response times (RTs) detect, localize, or discriminate target is presented at location previously occupied by an irrelevant peripheral cue. Generally, the slowing RTs described as negative effect on responding believed promote searching new locations. In this report, we consider whether IOR might benefit performance when goal prevent prepared response. Using stop-signal paradigm, show improved ability inhibit delaying responses...

Inhibition of return (IOR) refers to slower responding a stimulus that appears in the same rather than different location as preceding stimulus. The goal present study was examine relationship between IOR and stop signal inhibition. Participants were presented with two stimuli (S1 S2) on each trial. On half trials (go trials), participants required make speeded button-press response report S1; other (stop they cancel S1, indicated by appearance at variable delay delay, SSD) after S1. Success...

Inhibition of return (IOR) refers to slower responding a stimulus that is presented at the same, rather than different location as preceding, spatially nonpredictive, stimulus. Repetition priming speeded duplicates visual characteristics precedes it. IOR and repetition effects interact in nonspatial discrimination tasks but not localization tasks; three experiments examined whether this due processing differences or response between tasks. Two stimuli, S1 S2, occurred on each trial. In...