Is a letterbox always a letterbox? The role of affordances in guiding perceptual categorization.

Classically investigated in the context of judgment tasks about achievable actions, affordances have also been investigated in the context of the stimulus-response compatibility paradigm. Earlier work showed that perceptual categorization performance is significantly faster and more accurate when the orientation of the graspable part of a presented object, and the orientation of the participant's response are compatible, suggesting that the main function of affordances is restricted to action preparation. Here, we investigate the potential role of affordances in the categorization of ambiguous stimuli through a stimulus-response compatibility paradigm.

The Action Constraints of an Object Increase Distance Estimation in Extrapersonal Space.

This study investigated the role of action constraints related to an object as regards allocentric distance estimation in extrapersonal space. In two experiments conducted in both real and virtual environments, participants intending to push a trolley had to estimate its distance from a target situated in front of them. The trolley was either empty (i.

SEIS: Insight's Seismic Experiment for Internal Structure of Mars.

Unlabelled: By the end of 2018, 42 years after the landing of the two Viking seismometers on Mars, InSight will deploy onto Mars' surface the SEIS (eismic xperiment for nternal tructure) instrument; a six-axes seismometer equipped with both a long-period three-axes Very Broad Band (VBB) instrument and a three-axes short-period (SP) instrument. These six sensors will cover a broad range of the seismic bandwidth, from 0.01 Hz to 50 Hz, with possible extension to longer periods.

How movement direction shapes the spatial representation of its effects: About the consequence of the ideomotor bidirectional association.

Ideomotor theories assume that action and perception share a common representational system in which a movement and its effect are equally represented and integrated by a bidirectional association. However, there is no mention of how this association leads to influence the representational content of each part. In this article, we investigated the influence of movement properties on the spatial representation of auditory effects.

Alignment and Balance Methods in Total Knee Arthroplasty.

Total knee arthroplasty is one of the most commonly performed orthopaedic surgical procedures in the United States. Primary concepts in the surgical technique include restoring limb alignment and soft-tissue balance about the knee. Currently, traditional mechanical alignment concepts that focus on restoring neutral limb alignment have been challenged by the principle of kinematic alignment.

Incidence and predictors of total knee arthroplasty following knee arthroscopy.

Objective: The purpose of this study was to determine the effectiveness of knee arthroscopy (KA) in patients with symptomatic meniscal tears or mechanical symptoms and OA, by using conversion to TKA as a final outcome measure.

Methods: Retrospective review of all patients with OA who underwent KA in our practice.

Results: 1215 KAs were reviewed; 3.

Total knee arthroplasty in young patients: Factors predictive of aseptic failure in the 2nd-4th decade.

Objective: In a recently published article we reviewed our long term outcomes of TKA in young patients (<55) with end stage OA. The purpose of this study was to identify what additional factors may predict aseptic failure in these young patients.

Methods: A retrospective review of all patients in our young TKA database was performed, and included failure only for mechanical wear and loosening.

Integration of Action and Size Perception Through Practice.

Size perception is known to influence our usual interactions with environment. Numerous studies highlighted that during the visual presentation of an object, the properties of manual actions vary as a function of this object's size. In order to better understand the dynamic variations of relationships between size perception and action, we used an experimental paradigm consisting in two phases.

From anticipation to integration: the role of integrated action-effects in building sensorimotor contingencies.

Ideomotor approaches to action control have provided evidence that the activation of an anticipatory image of previously learned action-effects plays a decisive role in action selection. This study sought for converging evidence by combining three previous experimental paradigms: the response-effect compatibility protocol introduced by Kunde (Journal of Experimental Psychology: Human Perception and Performance, 27(2), 387-394, 2001), the acquisition-test paradigm developed by Elsner and Hommel (Journal of Experimental Psychology: Human Perception and Performance, 27(1), 229, 2001), and the object-action compatibility manipulation of Tucker and Ellis (Visual Cognition, 8(6), 769-800, 2001). Three groups of participants first performed a response-effect compatibility task, in which they carried out power and precision grasps that produced either grasp-compatible or grasp-incompatible pictures, or no action effects.

Assessing the functional role of motor response during the integration process.

The aim of this study was to provide evidence that actions performed by an individual influence the sensorimotor memory processing and, in particular, the integration process. We conducted 3 experiments that highlighted the multimodal aspect of memory traces. The 1st experiment consisted of a short-term priming paradigm based on 2 phases: a learning phase, consisting of the association between a shape and a sound, and a test phase, examining the priming effect of the shape seen in the learning phase on the processing of target tones.

[Cost analysis comparing single-use (Ambu® aScope™) and conventional reusable fiberoptic flexible scopes for difficult tracheal intubation].

Objective: Recommendations on difficult tracheal intubation constrain each surgical block to have a fiberscope available. Reusable fiberscope presents the problem of availability, the risk of non-conventional infections transmission and the cost. Single-use fiberscopes are presently available (Ambu® aScope™).

Extension type II pediatric supracondylar humerus fractures: a radiographic outcomes study of closed reduction and cast immobilization.

Background: The treatment of Gartland type II pediatric supracondylar humerus fractures remains controversial. Some argue that closed reduction and cast immobilization is sufficient to treat these fractures, whereas others advocate closed reduction and percutaneous pinning. The purpose of this radiographic outcomes study was to determine whether closed reduction and cast immobilization could successfully obtain and maintain acceptable reduction of extension type II supracondylar humerus fractures.

[Management of newborns with meconium-stained amniotic fluid: prospective evaluation of practice].

Objective: Regional guideline for immediate tracheal suctioning (ITS) in vigorous and non-vigorous infants born through meconium-stained amniotic fluid (MSAF) has been established in 2003. The objective of this study was to evaluate guideline application.

Study Design: Prospective cohort.