scholarly journals Testing the Motor Simulation Account of Source Errors for Actions in Recall

2017 ◽  
Vol 8 ◽  
Author(s):  
Nicholas Lange ◽  
Timothy J. Hollins ◽  
Patric Bach
Keyword(s):  
Motor Simulation ◽  
Source Errors

scholarly journals How to change your memory of an object with a posture and a verb

2018 ◽  
Vol 72 (5) ◽  
pp. 1112-1118 ◽  
Author(s):  
Léo Dutriaux ◽  
Xavière Dahiez ◽  
Valérie Gyselinck
Keyword(s):  
Grounded Cognition ◽  
Cued Recall ◽  
Matching Task ◽  
Long Term Memory ◽  
Sensorimotor System ◽  
Motor Simulation ◽  
Action Verb ◽  
Action Context ◽  
Processing Resources ◽  
New Evidence

According to grounded cognition, the format of representation of knowledge is sensorimotor. This means that long-term memory shares processing resources with the sensorimotor system. The main objective of this work is to provide new evidence in favour of two claims from the embodied cognition framework: (1) memory is grounded on the sensorimotor system, that is, memory shares processing resources with the sensorimotor system, and (2) memory serves at least in part to support action. For this purpose, the present experiment aimed to show that the action context modulates the motor simulation and, consequently, the memory of manipulable objects. Participants were presented with short phrases comprising the name of a manipulable object, and an action verb (“To take a cup”) or an attentional verb (“To see a cup”). During this phase, they had to put their hands in front of them in the control condition, whereas they had to keep them behind their back in the interfering condition. A cued recall test followed after a short distractive letter-matching task, with the verbs serving as cues. Results showed that memory of the words denoting manipulable objects was impaired by the interfering posture when associated with an action verb, but not when associated with an attentional verb. This suggests that a context which does not favour action interferes with motor simulation and thus decreases the memory of manipulable objects. These results provide strong evidence for a grounded account of memory and language.

A kinematic approach for error modelling in drilling

2019 ◽  
Vol 36 (4) ◽  
pp. 1364-1383 ◽  
Author(s):  
Wilma Polini ◽  
Andrea Corrado
Keyword(s):  
Machine Tool ◽  
Reference Frame ◽  
Kinematic Model ◽  
Model Parameters ◽  
Geometric Errors ◽  
Volumetric Error ◽  
Machined Surface ◽  
Content Type ◽  
Practical Applications ◽  
Source Errors

Purpose The purpose of this paper is to model how geometric errors of a machined surface (or manufacturing errors) are related to locators’ error, workpiece form error and machine tool volumetric error. A kinematic model is presented that puts into relationship the locator error, the workpiece form deviations and the machine tool volumetric error. Design/methodology/approach The paper presents a general and systematic approach for geometric error modelling in drilling because of the geometric errors of locators positioning, of workpiece datum surface and of machine tool. The model can be implemented in four steps: (1) calculation of the deviation in the workpiece reference frame because of deviations of locator positions; (2) evaluation of the deviation in the workpiece reference frame owing to form deviations in the datum surfaces of the workpiece; (3) formulation of the volumetric error of the machine tool; and (4) combination of those three models. Findings The advantage of this approach lies in that it enables the source errors affecting the drilling accuracy to be explicitly separated, thereby providing designers and/or field engineers with an informative guideline for accuracy improvement through suitable measures, i.e. component tolerancing in design, machining and so on. Two typical drilling operations are taken as examples to illustrate the generality and effectiveness of this approach. Research limitations/implications Some source errors, such as the dynamic behaviour of the machine tool, are not taken into consideration, which will be modelled in practical applications. Practical implications The proposed kinematic model may be set by means of experimental tests, concerning the industrial specific application, to identify the values of the model parameters, such as standard deviation of the machine tool axes positioning and rotational errors. Then, it may be easily used to foresee the location deviation of a single or a pattern of holes. Originality/value The approaches present in the literature aim to model only one or at most two sources of machining error, such as fixturing, machine tool or workpiece datum. This paper goes beyond the state of the art because it considers the locator errors together with the form deviation on the datum surface into contact with the locators and, then, the volumetric error of the machine tool.

scholarly journals Weight estimations with time-reversed point-light displays

2020 ◽  
Author(s):  
Claudia Braun ◽  
Sebastian Fischer ◽  
Nils Eckardt
Keyword(s):  
Social Life ◽  
Experimental Manipulation ◽  
Weak Version ◽  
Motor Simulation ◽  
Point Light ◽  
Goal Change ◽  
Reversed Order

AbstractInterpreting other’s actions is a very important ability not only in social life, but also in interactive sports. Previous experiments have demonstrated good estimation performances for the weight of lifted objects through point-light displays. The basis for these performances is commonly assigned to the concept of motor simulation regarding observed actions. In this study, we investigated the weak version of the motor simulation hypothesis which claims that the goal of an observed action strongly influences its understanding (Fogassi, Ferrari, Gesierich, Rozzi, Chersi, & Rizzolatti, 2005). Therefore, we conducted a weight judgement task with point-light displays and showed participants videos of a model lifting and lowering three different weights. The experimental manipulation consisted of a goal change of these actions by showing the videos normal and in a time-reversed order of sequence. The results show a systematic overestimation of weights for time-reversed lowering actions (thus looking like lifting actions) while weight estimations for time-reversed lifting actions did not differ from the original playback direction. The results are discussed in terms of motor simulation and different kinematic profiles of the presented actions.

scholarly journals Series Wound DC Motor Simulation Applying MATLAB SIMULINK and LabVIEW Control Design and Simulation Module

2019 ◽  
Vol 48 (1) ◽  
pp. 65-69
Author(s):  
Gusztáv Áron Sziki ◽  
Kornél Sarvajcz ◽  
Attila Szántó ◽  
Tamás Mankovits
Keyword(s):  
Real Time ◽  
Direct Current ◽  
Field Programmable Gate Array ◽  
Supply Voltage ◽  
Control Design ◽  
Driving Simulation ◽  
Motor Simulation ◽  
Resistance Torque ◽  
Field Programmable ◽  
Hardware Platforms

In our previous publication a model for series wound direct current (SWDC) motors was described and a simulation program was presented which is based on the above model and was developed in MATLAB environment. In the publication mentioned above, the measurement process of the parameters (bearing resistance torque, electric resistances, dynamic inductances) of the SWDC motor was also described. From the parameters the program calculates the current intensity, rpm and torque of the motor as a function of time. The recent publication is about the realization of the above program applying the Control Design and Simulation Module of NI LabVIEW. This module enables the adjustment of input parameters (e.g. supply voltage) during the running of the program, thus the realization of real time driving simulation. In addition, among others, it can be applied with data acquisition, GPIB, CAN, and FPGA (field-programmable gate array) hardware platforms of National Instruments.

scholarly journals Motor simulation in tool-use effect on distance estimation: A replication of Witt and Proffitt (2008)

2020 ◽  
Vol 27 (2) ◽  
pp. 301-306 ◽  
Author(s):  
Lisa Molto ◽  
Nicolas Morgado ◽  
Eric Guinet ◽  
Laurina Fazioli ◽  
Loïc P. Heurley ◽  
...  
Keyword(s):  
Tool Use ◽  
Distance Estimation ◽  
Motor Simulation

scholarly journals Modulation of Rolandic Beta-Band Oscillations during Motor Simulation of Joint Actions

PLoS ONE ◽  
2015 ◽  
Vol 10 (7) ◽  
pp. e0131655 ◽  
Author(s):  
Mathilde Ménoret ◽  
Mathieu Bourguignon ◽  
Riitta Hari
Keyword(s):  
Motor Simulation ◽  
Beta Band ◽  
Joint Actions

Systematic Modeling of Workpiece-Fixture Geometric Default and Compliance for the Prediction of Workpiece Machining Error

2006 ◽  
Vol 129 (4) ◽  
pp. 789-801 ◽  
Author(s):  
Guohua Qin ◽  
Weihong Zhang ◽  
Zhuxi Wu ◽  
Min Wan
Keyword(s):  
Contact Region ◽  
Underlying Mechanism ◽  
Mathematical Programming Problem ◽  
Complementary Energy ◽  
Machining Error ◽  
Numerical Tests ◽  
Nonlinear Mathematical Programming ◽  
Fixture System ◽  
Source Errors ◽  
First Time

Control of workpiece machining error (WME) is a key concern in the design of a fixture system. In this paper, source errors, which are categorized into workpiece-fixture geometric default and workpiece-fixture compliance, are systematically investigated to reveal their effects upon the WME. The underlying mechanism is that source errors lead to the workpiece position error (WPE), the workpiece elastic deformations (WED), and the inconsistent datum error (IDE), and all of them will contribute together to the WME. Here, the IDE refers to the dimension deviation of the processing datum from the locating datum once two references do not coincide. An overall quantitative formulation is proposed for the computing of WME in terms of WPE, WED, and IDE for the first time. In detail, the WPE raised in the workpiece-locating and clamping process is evaluated based on the geometric defaults and local deformations of workpiece-fixture in the contact region. The WED relative to the workpiece-clamping process is determined by solving a nonlinear mathematical programming problem of minimizing the total complementary energy of the frictional workpiece-fixture system. Some numerical tests are finally demonstrated to validate the proposed approach on the basis of both theoretical and experimental data given in the references.

A General Approach for Geometric Error Modeling of Lower Mobility Parallel Manipulators

2011 ◽  
Vol 3 (2) ◽  
Author(s):  
Haitao Liu ◽  
Tian Huang ◽  
Derek G. Chetwynd
Keyword(s):  
Systematic Approach ◽  
Parallel Manipulators ◽  
Geometric Error ◽  
Error Modeling ◽  
Kinematic Calibration ◽  
Accuracy Improvement ◽  
Linear Map ◽  
Homogeneous Transformation Matrix ◽  
Lower Mobility ◽  
Source Errors

This paper presents a general and systematic approach for geometric error modeling of lower mobility manipulators. The approach can be implemented in three steps: (1) development of a linear map between the pose error twist and source errors within an individual limb using the homogeneous transformation matrix method; (2) formulation of a linear map between the pose error twist and the joint error intensities of a lower mobility parallel manipulator; and (3) combination of these two models. The merit of this approach lies in that it enables the source errors affecting the compensatable and uncompensatable pose accuracy of the platform to be explicitly separated, thereby providing designers and/or field engineers with an informative guideline for the accuracy improvement achievable by suitable measures, i.e., component tolerancing in design, manufacturing and assembly processes, and kinematic calibration. Three typical and well-known parallel manipulators are taken as examples to illustrate the generality and effectiveness of this approach.

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