Search results for " Control"
showing 10 items of 7691 documents
Surprise: Unexpected Action Execution and Unexpected Inhibition Recruit the Same Fronto-Basal-Ganglia Network.
2020
Unexpected and thus surprising events are omnipresent and oftentimes require adaptive behavior such as unexpected inhibition or unexpected action. The current theory of unexpected events suggests that such unexpected events just like global stopping recruit a fronto-basal-ganglia network. A global suppressive effect impacting ongoing motor responses and cognition is specifically attributed to the subthalamic nucleus (STN). Previous studies either used separate tasks or presented unexpected, task-unrelated stimuli during response inhibition tasks to relate the neural signature of unexpected events to that of stopping. Here, we aimed to test these predictions using a within task design with i…
Ketorolac, diclofenac, and ketoprofen are equally safe for pain relief after major surgery
2002
Background Ketorolac is approved for the relief of postoperative pain but concerns have been raised over a possible risk of serious adverse effects and death. Two regulatory reviews in Europe on the safety of ketorolac found the data were inconclusive and lacked comparison with other non-steroidal anti-inflammatory drugs. The aim of this study was to compare the risk of serious adverse effects with ketorolac vs diclofenac or ketoprofen in adult patients after elective major surgery. Methods This prospective, randomized multicentre trial evaluated the risks of death, increased surgical site bleeding, gastrointestinal bleeding, acute renal failure, and allergic reactions, with ketorolac vs di…
Planning an action.
1997
The motor control of a sequence of two motor acts forming an action was studied in the present experiment. The two analysed motor acts were reaching-grasping an object (first target) and placing it on a second target of the same shape and size (experiment 1). The aim was to determine whether extrinsic properties of the second target (i.e. target distance) could selectively influence the kinematics of reaching and grasping. Distance, position and size of both targets were randomly varied across the experimental session. The kinematics of the initial phase of the first motor act, that is, velocity of reaching and hand shaping of grasping, were influenced by distance of the second target. No k…
Influence of automatic word reading on motor control.
1998
We investigated the possible influence of automatic word reading on processes of visuo-motor transformation. Six subjects were required to reach and grasp a rod on whose visible face the word 'long' or 'short' was printed. Word reading was not explicitly required. In order to induce subjects to visually analyse the object trial by trial, object position and size were randomly varied during the experimental session. The kinematics of the reaching component was affected by word presentation. Peak acceleration, peak velocity, and peak deceleration of arm were higher for the word 'long' with respect to the word 'short'. That is, during the initial movement phase subjects automatically associate…
Visual illusions and the control of children arm movements.
2001
The aim of the present study was to determine whether children like adults (Gentilucci M, Chieffi S, Daprati E, Saetti MC, Toni I. Visual illusion and action. Neuropsychologia 1996;34:369-76; Gentilucci M, Daprati E, Gangitano M, Toni I. Eye position tunes the contribution of allocentric and egocentric information to target localisation in human goal directed arm movements. Neurosci Lett 1997;222:123-6) are influenced by visual illusions when they transform visual information in motor command. Children and adults pointed to a shaft extremity of the Müller-Lyer configurations, as well as to an extremity of a control configuration. Movements were executed in two experimental conditions. In th…
Preparedness for landing after a self-initiated fall.
2012
A startling auditory stimulus (SAS) causes a faster execution of voluntary actions when applied together with the imperative signal in reaction time tasks (the StartReact effect). However, speeding up reaction time may not be the best strategy in all tasks. After a self-initiated fall, the program for landing has to be time-locked to foot contact to avoid damage, and therefore advanced execution of the program would not be convenient. We examined the effects of SAS on the landing motor program in 8 healthy subjects that were requested to let themselves fall from platforms either 50 or 80 cm high at the perception of a visual imperative signal and land on specific targets. In trials at rand…
From development to aging: Holistic face perception in children, younger and older adults.
2015
Few published reports examine the development of holistic face processing across the lifespan such that face-specific processes are adequately differentiated from general developmental effects. To address this gap in the literature, we used the complete design of the composite paradigm (Richler & Gauthier, 2014) with faces and non-face control objects (watches) to investigate holistic processing in children (8-10years), young adults (20-32years) and older adults (65-78years). Several modifications to past research designs were introduced to improve the ability to draw conclusions about the development of holistic processing in terms of face-specificity, response bias, and age-related differ…
COVID–19. Effect of Moral Messages to Persuade the Population to Stay at Home in Spain, Chile, and Colombia
2021
1.362 / 5.000 Resultados de traducción Analizar si el contenido de tres mensajes morales (deontológico, utilitarismo ético, virtud ética) y un mensaje de control afectan diferencialmente la probabilidad de realizar cuatro comportamientos: lavarse las manos, participar en reuniones públicas, quedarse en casa/evitar el contacto social y reenviar el mensaje para informar a más personas. En nuestro estudio, el emisor del mensaje es un profesor universitario. Estas variables se miden en términos de sus intenciones de comportamiento y las intenciones de comportamiento de los demás (creencias sobre el comportamiento de los demás). Ensayo controlado aleatorizado. Nuestro estudio incluye el análisis…
A developmental approach to alcohol drinking behaviour in adulthood: a follow-up study from age 8 to age 42
2008
AIMS: To study the links of family background, child and adolescent social behaviour, and (mal)adaptation with heavy drinking by age 20 and with the frequency of drinking, binge drinking, Cut-down, Annoyed, Guilt, Eye-opener (CAGE) questionnaire scores and problems due to drinking at ages 27 and 42 years. DESIGN: In the Finnish Jyvaskyla Longitudinal Study of Personality and Social Development, data have been collected by interviews, inventories and questionnaires. Behavioural data were gathered at ages 8 and 14; data on alcohol consumption were gathered at ages 14, 20, 27, 36 and 42. PARTICIPANTS: A total of 184 males and 163 females; 94% of the original sample of the 8-year-olds. FINDINGS…
Personality â a resource or risk for successful development
2009
Personality as a resource or risk for development was discussed in the light of the results of the ongoing Finnish Jyväskylä Longitudinal Study of Personality and Social Development (FJYLS) which the author has conducted since 1968 when the participants (N = 369, b. 1959) were 8 years of age. A general hypothesis presented within a two-dimensional framework of self-control and activity was that the child's high self-control of emotions and behavior would be associated with adaptive behavior in adulthood. The results have provided evidence in support for and limitations to the hypothesis. High self-control was a resource and low self-control was a risk for development, but there were gender …