The integration of temporally shifted visual feedback in a synchronization task: The role of perceptual stability in a visuo-proprioceptive conflict situation

The present study examined whether the beneficial role of coherently grouped visual motion structures for performing complex (interlimb) coordination patterns can be generalized to synchronization behavior in a visuo-proprioceptive conflict situation. To achieve this goal, 17 participants had to synchronize a self-moved circle, representing the arm movement, with a visual target signal corresponding to five temporally shifted visual feedback conditions (0%, 25%, 50%, 75%, and 100% of the target cycle duration) in three synchronization modes (in-phase, anti-phase, and intermediate). The results showed that the perception of a newly generated perceptual Gestalt between the visual feedback of the arm and the target signal facilitated the synchronization performance in the preferred in-phase synchronization mode in contrast to the less stable anti-phase and intermediate mode. Our findings suggest that the complexity of the synchronization mode defines to what extent the visual and/or proprioceptive information source affects the synchronization performance in the present unimanual synchronization task.     

Temporal preparation,response inhibition and impulsivity

Temporal preparation and impulsivity involve overlapping neural structures (prefrontal cortex) and cognitive functions (response inhibition and time perception), however, their interrelations had not been investigated. We studied such interrelations by comparing the performance of groups with low vs. high non-clinical trait impulsivity during a temporal preparation go no-go task. This task measured, in less than 10 min, how response inhibition was influenced both by temporal orienting of attention (guided by predictive temporal cues) and by sequential effects (produced by repetition/alternation of the duration of preparatory intervals in consecutive trials). The results showed that sequential effects produced dissociable patterns of temporal preparation as a function of impulsivity. Sequential effects facilitated both response speed (reaction times – RTs – to the go condition) and response inhibition (false alarms to the no-go condition) selectively in the low impulsivity group. In the high impulsivity group, in contrast, sequential effects only improved RTs but not response inhibition. We concluded that both excitatory and inhibitory processing may be enhanced concurrently by sequential effects, which enables the temporal preparation of fast and controlled responses. Impulsivity could hence be related to less efficient temporal preparation of that inhibitory processing.     

Human performance on the temporal bisection task

The perception and processing of temporal information are tasks the brain must continuously perform. These include measuring the duration of stimuli, storing duration information in memory, recalling such memories, and comparing two durations. How the brain accomplishes these tasks, however, is still open for debate. The temporal bisection task, which requires subjects to compare temporal stimuli to durations held in memory, is perfectly suited to address these questions. Here we perform a meta-analysis of human performance on the temporal bisection task collected from 148 experiments spread across 18 independent studies. With this expanded data set we are able to show that human performance on this task contains a number of significant peculiarities, which in total no single model yet proposed has been able to explain. Here we present a simple 2-step decision model that is capable of explaining all the idiosyncrasies seen in the data.     

Seven-month-olds detect ordinal numerical relationships within temporal sequences

Previous evidence has shown that 11-month-olds represent ordinal relations between purely numerical values, whereas younger infants require a confluence of numerical and non-numerical cues. In this study, we show that when multiple featural cues (i.e., color and shape) are provided, 7-month-olds detect reversals in the ordinal direction of numerical sequences relying solely on number when non-numerical quantitative cues are controlled. These results provide evidence for the influence of featural information and multiple cue integration on infants’ proneness to detect ordinal numerical information.     

Differential information use for near and distant decisions

Whether choosing a cell phone, a senator, or a kitchen appliance, consumers today quickly find themselves awash in information from commercials, magazines, and websites. Whereas some of this information is broad, decontextualized, and abstracted across multiple individuals and instances, other information is more closely tied to a single experience within one specific context. The present research asks: under what circumstances do people rely on abstracted averages, and when are they swayed by another individual’s particular experience? Across three studies, we show that temporal distance increases the relative weight placed on aggregate vs. individualized information when participants are asked to choose between two sleeping pills, migraine medications, or kitchen appliances, and that this process impacts not only evaluation but also willingness to pay and choice. Potential implications for evaluation, decision-making, and base-rate utilization are discussed.     

Academic procrastination: The pattern and correlates of behavioural postponement

Using a series of computer-based assignments, we examined whether students’ submission patterns revealed a hyperbolic pattern of temporal discounting, such that few assignments are submitted far ahead of the deadline and submission of assignments accelerates at an increasing rate as the deadline becomes imminent. We further examined whether variables related to self-regulation – namely, self-reported procrastination, implementation intentions, say-do correspondence, and perceived academic control – correlated with behavioural postponement. Results revealed strong behavioural evidence of temporal discounting, especially among those who identified themselves as procrastinators. Among the self-regulation measures, only say-do correspondence consistently correlated with procrastination.     

The pre-reflective experience of “I” as a continuously existing being: The role of temporal functional binding

The present moment is of infinitesimally brief duration. In the brain, however, there are perceptual processes that bind together events occurring at different times, on a time scale of milliseconds, into a coherent and integrated temporal representation. These processes include temporal integration, as in perception of biological motion, synchronisation, and change detection. These processes are also responsible for temporal integration and coherence in inner mental life, such as in mental imagery. I argue that this gives rise to the pre-reflective experience of the self as a continuously existing being. Temporal integration is also a feature of the experience of action–outcome relations, and I argue that this produces a pre-reflective experience of the self, not just as continuously existing, but also as the doer of both physical and mental actions. This is the foundation on which the idea of the self as continuously existing on longer time scales – the narrative self – is built.     

The contribution of disengagement to temporal discriminability

The present study examines the idea that time-based forgetting of outdated information can lead to better memory of currently relevant information. This was done using the visual arrays task, along with a between-subjects manipulation of both the retention interval (1?s vs. 4?s) and the time between two trials (1?s vs. 4?s). Consistent with prior work [Shipstead, Z., &; Engle, R. W. (2013). Interference within the focus of attention: Working memory tasks reflect more than temporary maintenance. Journal of Experimental Psychology: Learning, Memory, and Cognition, 39, 277–289; Experiment 1], longer retention intervals did not lead to diminished memory of currently relevant information. However, we did find that longer periods of time between two trials improved memory for currently relevant information. This replicates findings that indicate proactive interference affects visual arrays performance and extends previous findings to show that reduction of proactive interference can occur in a time-dependent manner.     

When Good Things Feel Closer and Bad Things Feel Farther: The Role of Perceived Control on Psychological Distance Perception

Prior research has found that people perceive positive objects and locations as physically closer than negative ones. Yet, other work has found the opposite to be true for perceptions of temporal distance, where negative future events feel closer than positive ones. Motivated by this seeming discrepancy, we propose that (a) feelings of control can differentially influence how far away valenced (i.e., positive or negative) targets feel in space and time and that (b) the difference in perceived control over space versus time can account for these opposite findings. First, across four studies, we show that high (vs. low) control makes positive targets feel closer and negative targets feel more distant in both physical space (Studies 1 and 1a) and time (Studies 2 and 2a). Then, in Studies 3 and 4, we simultaneously examine perceptions of spatial and temporal distance and show that baseline differences in perceived control between these domains can explain the prior discrepant findings. Finally, a within‐paper meta‐analysis offers further support to these findings.