Normand Teasdale - Academia.edu (original) (raw)

Papers by Normand Teasdale

Proceedings of the 21st Canadian Multidisciplinary Road Safety Conference, Halifax, Nova Scotia, ... more Proceedings of the 21st Canadian Multidisciplinary Road Safety Conference, Halifax, Nova Scotia, May 8-11, 2011 Compte-rendu de la 21e Conférence canadienne multidisciplinaire sur la sécurité routière, Halifax, Nouvelle-Écosse, 8-11 mai 2011 ... Older Drivers Fail to ...

Current Directions in Psychological Science, 2010

Abstract The aging of the population, combined with the overrepresentation of older drivers in ca... more Abstract The aging of the population, combined with the overrepresentation of older drivers in car crashes, has engendered a whole body of research destined at finding simple and efficient assessment methods of driving capacities. Such a search is destined to fail, given ...

Driving retraining classes may offer an opportunity to attenuate some of the aging manifestation ... more Driving retraining classes may offer an opportunity to attenuate some of the aging manifestation that may alter driving skills. Unfortunately, there are suggestions that classroom programs do not allow to improve the driving performance of elderly drivers. The aim of this study was to evaluate if specific simulator training sessions with video-based feedback can modify on-road behaviors of elderly drivers. In order to evaluate the effectiveness of the training, 10 elderly drivers who received feedback were tested before and after the training program with an on-road standardized evaluation. A control group (12 older drivers) also participated. Participants in this group received a classroom training program and similar exposure to driving in a simulator but without drivingspecific feedback. After attending the training program, the control group showed no modification of their driving performance (on-road score, frequency of successful turning maneuvers and frequency blind spot verification before lane change maneuvers). On the other hand, participants in the feedback group improved their driving skills for all maneuvers that were evaluated. These results suggest that simulator training transferred effectively to on-road performance. In order to be effective, driving programs should include active practice sessions with driving specific feedback.

This study examines how older drivers responded to repeated exposures to a driver simulator. Olde... more This study examines how older drivers responded to repeated exposures to a driver simulator. Older active and fit drivers participated in 5 simulator sessions within a 14-day period. For each session, simulator sickness symptoms were measured with the Simulator Sickness Questionnaire at baseline and post-session. In addition, participants completed a 10-cm visual analog scale (0= no symptom, 10= mild nausea) at baseline and after a familiarization scenario and post-session. Overall, older adults adapted to the driving simulator and by the fourth session, they showed no difference in sickness scores between the baseline and the post-session measurements. Increasing the exposure duration at session 5 yielded an increase in the sickness symptoms. These results suggest that shorterduration multiple exposures could reduce simulator sickness symptoms in elderly drivers and allow a more effective use of simulators for training by preventing early withdrawal of participants.

Lane changing is a complex driving maneuver that could challenge elderly drivers. The aim of this... more Lane changing is a complex driving maneuver that could challenge elderly drivers. The aim of this study was to evaluate eye glances of young and elderly active drivers when engaging lane change maneuvers. Young (21-31 years) and older (65-75 years) active drivers drove through a continuous simulated environment (STISIM, v2.0). The scenario included 16 events where the driver needed to glance at three regions of interest (ROI): 1) the rear-view mirror, 2) the left-side mirror, and 3) the left blind spot to ensure secure lane change. The lane change maneuvers were necessary to avoid a static object that was partially or completely blocking the lane or for overtaking a slower moving vehicle. Compared with younger drivers, older drivers showed a reduced frequency of glances toward the left-side mirror and the blind spot. While the older drivers showed a constant frequency of glances across the two types of driving maneuvers (i.e., avoiding a static object and overtaking a slower vehicle), the younger drivers generally showed a higher frequency of glances and this frequency increased when overtaking a slower vehicle. A better knowledge of the elderly drivers' behavior could be beneficial in identifying at-risk behaviors and to retrain older drivers to adopt safer behaviors.

Neuroscience Letters, Apr 1, 2004

To examine the influence of the target size onto postural EMG activity, eight subjects performed,... more To examine the influence of the target size onto postural EMG activity, eight subjects performed, from a standing position, rapid and accurate pointings to a target located within reach. The target size was varied across blocks of trials. Hand movement time increased when the target size was decreased. Interestingly, the magnitude of the integrated EMG activity of lower limb muscles (TAi, TFLc, RFi) decreased with a decreasing target size, while that of the erector spinae increased. The effects were observed as early as 200 ms before the hand movement onset. When standing, these early commands could influence the control of the hand during the acceleration phase. The target size was specified within the postural command before any hand movement took place suggesting the characteristics of the pointing task were integrated in a feedforward manner.

Human Movement Science, Dec 1, 1995

Bimanual in-phase and anti-phase patterns were performed * Corresponding author. Present address:... more Bimanual in-phase and anti-phase patterns were performed * Corresponding author. Present address: Motor Control Lab., FLOK, K.U. Leuven, Tervuursevest 101, 3001 Heverlee, Belgium. 0167-9457/95/$09.50 0 1995 Elsevier Science B.V. All rights reserved SSDI 0167-9457(95)00031-3 696 D.J. Serrien et al. /Human Movement Science 14 (1995) 695-710

Http Dx Doi Org 10 1080 15389588 2010 548426, Apr 1, 2011

Journal of Motor Behavior, Jul 1, 1995

This experiment examined whether rapid arm movements can be corrected in response to a change in ... more This experiment examined whether rapid arm movements can be corrected in response to a change in target position that occurs just prior to movement onset, during saccadic suppression of displacement. Because the threshold of retinal input reaches its highest magnitude at that time, displacement of the visual target of a saccade is not perceived. Subjects (N = 6) were instructed to perform very rapid arm movements toward visual targets located 16, 20, and 24 degrees from midline (on average, movement time was 208 ms). On some trials the 20 degrees target was displaced 4 degrees either to the right or to the left during saccadic suppression. For double-step trials, arm movements did not deviate from their original trajectory. Movement endpoints and movement structure (i.e., velocity-and acceleration-time profiles) were similar whether or not target displacements occurred, showing the failure of proprioceptive signals or internal feedback loops to correct the arm trajectory. Following this movement, terminal spatially oriented movements corrected the direction of the initial movement (as compared with the single-step control trials) when the target eccentricity decreased by 4 degrees. Subjects were unaware of these spatial corrections. Therefore, spatial corrections of hand position were driven by the goal level of the task, which was updated by oculomotor corrective responses when a target shift occurred.

Quart J Exp Psych a Hum Exp P, 1994

Liens d'intérêts : Romain Terrier et Pascal Toschi sont membres de la société CEVRES Santé qui dé... more Liens d'intérêts : Romain Terrier et Pascal Toschi sont membres de la société CEVRES Santé qui développe le dispositif MyoluxTM utilisé dans cette étude. Nicolas Forestier et Normand Teasdale n'ont aucun lien d'intérêt.

Journal of sports science & medicine

(a) to examine if kinetic and kinematic parameters of the sprint start could differentiate elite ... more (a) to examine if kinetic and kinematic parameters of the sprint start could differentiate elite from sub-elite sprinters and, (b) to investigate whether providing feedback (FB) about selected parameters could improve starting block performance of intermediate sprinters over a 6-week training period. Twelve male sprinters, assigned to an elite or a sub-elite group, participated in Experiment 1. Eight intermediate sprinters participated in Experiment 2. All athletes were required to perform three sprint starts at maximum intensity followed by a 10-m run. To detect differences between elite and sub-elite groups, comparisons were made using t-tests for independent samples. Parameters reaching a significant group difference were retained for the linear discriminant analysis (LDA). The LDA yielded four discriminative kinetic parameters. Feedback about these selected parameters was given to sprinters in Experiment 2. For this experiment, data acquisition was divided into three periods. Th...

Driving retraining classes may offer an opportunity to attenuate some of the aging manifestation ... more Driving retraining classes may offer an opportunity to attenuate some of the aging manifestation that may alter driving skills. Unfortunately, there are suggestions that classroom programs do not allow to improve the driving performance of elderly drivers. The aim of this study was to evaluate if specific simulator training sessions with video-based feedback can modify on-road behaviors of elderly drivers. In order to evaluate the effectiveness of the training, 10 elderly drivers who received feedback were tested before and after the training program with an on-road standardized evaluation. A control group (12 older drivers) also participated. Participants in this group received a classroom training program and similar exposure to driving in a simulator but without driving-specific feedback. After attending the training program, the control group showed no modification of their driving performance (on-road score, frequency of successful turning maneuvers and frequency blind spot ver...

Journal of Pain

It is well recognized that both the control of posture and the perception of pain require cogniti... more It is well recognized that both the control of posture and the perception of pain require cognitive resources but it remains to be determined if both mechanisms share common neural processes. The aim of the present study was two-fold: (1) to assess the effects of a mental task (counting backwards by multiples of three) on the control of upright standing with and without painful stimulation and (2) to quantify the cognitive resources required to maintain an upright stance with and without a painful stimulation by assessing the performance of a second- ary hand motor reaction time (RT) task. The pain stimulation was in- duced with an electrical stimulation applied to the dorsal aspect of the first metatarsal of both feet. Firstly, the performance of the mental task (number of words and number of mistakes) was not affected by the painful stimulation. Pain, however, altered the postural stability (in- creased mean velocity and variability of the center or pressure displace- ments) but t...

Current Directions in Psychological Science, 2010

Neuroscience Letters, Apr 1, 2004

Human Movement Science, Dec 1, 1995

Http Dx Doi Org 10 1080 15389588 2010 548426, Apr 1, 2011

Journal of Motor Behavior, Jul 1, 1995

Quart J Exp Psych a Hum Exp P, 1994

Journal of sports science & medicine

Driving retraining classes may offer an opportunity to attenuate some of the aging manifestation ... more Driving retraining classes may offer an opportunity to attenuate some of the aging manifestation that may alter driving skills. Unfortunately, there are suggestions that classroom programs do not allow to improve the driving performance of elderly drivers. The aim of this study was to evaluate if specific simulator training sessions with video-based feedback can modify on-road behaviors of elderly drivers. In order to evaluate the effectiveness of the training, 10 elderly drivers who received feedback were tested before and after the training program with an on-road standardized evaluation. A control group (12 older drivers) also participated. Participants in this group received a classroom training program and similar exposure to driving in a simulator but without driving-specific feedback. After attending the training program, the control group showed no modification of their driving performance (on-road score, frequency of successful turning maneuvers and frequency blind spot ver...

Journal of Pain