Influence of Language on Colour Perception: A Simulationist Explanation

“How can perception be altered by language?” is the fundamental question of this article. Indeed, various studies have pointed out the influence of colour-related knowledge on object and colour perception, evoked by linguistic stimuli. Here the relevance of the simulationist approach is assumed in order to explain this influence, where the understanding of colour-related words or sentences involves a process of colour simulation that is supported by a neuronal network partially similar to the network involved in colour perception. Consequently, colour-related knowledge and colour perception can interact through a process of pattern interference. In support of this idea, studies are discussed showing priming effects between colour simulation and colour perception, but two limitations are also raised. Firstly, these works all used between-category colour discrimination tasks that allow the intervention of lexical processes that can also explain priming. Secondly, these works control the congruency link between prime and target at the level of ‘colour category’, and no demonstration is made of an influence at the level of specific hues. Consequently, the simulationist view of language/perception interactions seems an interesting way to thinking but more experimens are needed in order to overcome some limitations

Influences bidirectionnelles entre action et évaluation émotionnelle : effets de fluence motrice

The constructivist approach of emotion considers that emotional features are not intrinsic properties of objects but are rather constructed « right here, right now » during the sensorimotor interactions between an individual and his environment. Our objective in this work was to demonstrate the mutual effects of action and emotional evaluation, grounded on the hedonic character of motor fluency (i.e. the ease with which an action is executed). We manipulated motor fluency by the use of lateralized hand movements in a valence judgment task. Indeed, valence and laterality appear to be linked since our dominant side is associated to positive valence (Casasanto, 2009). We compared conditions based on the congruency and non-congruency between the valence of items and the affective connotation of response movements. Our results indicated bidirectional influences of actions and evaluation based on two separate processes. On one hand during valence judgment, a compatibility effect facilitated the execution of a movement that was consistent due to motor fluency. On the other hand an attribution effect allowed the fluency of a movement to induce variations in the evaluation of neutral and emotional words. Furthermore, our works demonstrated the impact of the response device (orientation of a valence judgment scale and localization of response keys) on emotional judgment, underlying the situated character of evaluation. Those results are discussed in the light of the constructivist conception of emotion, in accordance with an embodied and situated approach of cognition.L’approche constructiviste de l’émotion considère que les traits émotionnels ne sont pas des propriétés intrinsèques des objets mais se construisent « ici et maintenant » lors de l’interaction sensorimotrice individu/environnement. Notre objectif dans ce travail de thèse était de mettre en évidence des effets réciproques entre l’action et l’évaluation émotionnelle, fondés sur le caractère hédonique de la fluence motrice, c’est-à-dire l’aisance avec laquelle une action est réalisée. Nous avons choisi de manipuler la fluence motrice par des mouvements latéralisés des mains exécutés lors d’une tâche de jugement de valence. En effet, il existe des liens marqués entre valence et latéralité, de sorte que le côté dominant d’un individu est associé à la valence positive (Casasanto, 2009). Nous comparons des conditions de congruence et de non-congruence entre la valence des items et le geste de réponse. Nos résultats ont montré des influences bidirectionnelles des actions et de l’évaluation basées sur deux processus distincts. D’une part lors d’un jugement de valence, un effet de compatibilité facilite la réalisation du geste de réponse compatible grâce à la fluence motrice. D’autre part la fluence d’un comportement moteur entraine, par un effet d’attribution, des variations dans l’évaluation de mots neutres ou connotés positivement et négativement. De plus, nos travaux ont mis en évidence le rôle du dispositif de réponse (échelle de jugement de valence et localisation des touches de réponse) sur l’évaluation émotionnelle, soulignant le caractère situé du jugement. Ces résultats sont discutés à la lumière de la conception constructiviste de l’émotion en accord avec une approche incarnée et située de la cognition

Bidirectional influences of action and emotional evaluation : effects of motor fluency

L’approche constructiviste de l’émotion considère que les traits émotionnels ne sont pas des propriétés intrinsèques des objets mais se construisent « ici et maintenant » lors de l’interaction sensorimotrice individu/environnement. Notre objectif dans ce travail de thèse était de mettre en évidence des effets réciproques entre l’action et l’évaluation émotionnelle, fondés sur le caractère hédonique de la fluence motrice, c’est-à-dire l’aisance avec laquelle une action est réalisée. Nous avons choisi de manipuler la fluence motrice par des mouvements latéralisés des mains exécutés lors d’une tâche de jugement de valence. En effet, il existe des liens marqués entre valence et latéralité, de sorte que le côté dominant d’un individu est associé à la valence positive (Casasanto, 2009). Nous comparons des conditions de congruence et de non-congruence entre la valence des items et le geste de réponse. Nos résultats ont montré des influences bidirectionnelles des actions et de l’évaluation basées sur deux processus distincts. D’une part lors d’un jugement de valence, un effet de compatibilité facilite la réalisation du geste de réponse compatible grâce à la fluence motrice. D’autre part la fluence d’un comportement moteur entraine, par un effet d’attribution, des variations dans l’évaluation de mots neutres ou connotés positivement et négativement. De plus, nos travaux ont mis en évidence le rôle du dispositif de réponse (échelle de jugement de valence et localisation des touches de réponse) sur l’évaluation émotionnelle, soulignant le caractère situé du jugement. Ces résultats sont discutés à la lumière de la conception constructiviste de l’émotion en accord avec une approche incarnée et située de la cognition.The constructivist approach of emotion considers that emotional features are not intrinsic properties of objects but are rather constructed « right here, right now » during the sensorimotor interactions between an individual and his environment. Our objective in this work was to demonstrate the mutual effects of action and emotional evaluation, grounded on the hedonic character of motor fluency (i.e. the ease with which an action is executed). We manipulated motor fluency by the use of lateralized hand movements in a valence judgment task. Indeed, valence and laterality appear to be linked since our dominant side is associated to positive valence (Casasanto, 2009). We compared conditions based on the congruency and non-congruency between the valence of items and the affective connotation of response movements. Our results indicated bidirectional influences of actions and evaluation based on two separate processes. On one hand during valence judgment, a compatibility effect facilitated the execution of a movement that was consistent due to motor fluency. On the other hand an attribution effect allowed the fluency of a movement to induce variations in the evaluation of neutral and emotional words. Furthermore, our works demonstrated the impact of the response device (orientation of a valence judgment scale and localization of response keys) on emotional judgment, underlying the situated character of evaluation. Those results are discussed in the light of the constructivist conception of emotion, in accordance with an embodied and situated approach of cognition

Influences bidirectionnelles entre action et évaluation émotionnelle (effets de fluence motrice)

L approche constructiviste de l émotion considère que les traits émotionnels ne sont pas des propriétés intrinsèques des objets mais se construisent ici et maintenant lors de l interaction sensorimotrice individu/environnement. Notre objectif dans ce travail de thèse était de mettre en évidence des effets réciproques entre l action et l évaluation émotionnelle, fondés sur le caractère hédonique de la fluence motrice, c est-à-dire l aisance avec laquelle une action est réalisée. Nous avons choisi de manipuler la fluence motrice par des mouvements latéralisés des mains exécutés lors d une tâche de jugement de valence. En effet, il existe des liens marqués entre valence et latéralité, de sorte que le côté dominant d un individu est associé à la valence positive (Casasanto, 2009). Nous comparons des conditions de congruence et de non-congruence entre la valence des items et le geste de réponse. Nos résultats ont montré des influences bidirectionnelles des actions et de l évaluation basées sur deux processus distincts. D une part lors d un jugement de valence, un effet de compatibilité facilite la réalisation du geste de réponse compatible grâce à la fluence motrice. D autre part la fluence d un comportement moteur entraine, par un effet d attribution, des variations dans l évaluation de mots neutres ou connotés positivement et négativement. De plus, nos travaux ont mis en évidence le rôle du dispositif de réponse (échelle de jugement de valence et localisation des touches de réponse) sur l évaluation émotionnelle, soulignant le caractère situé du jugement. Ces résultats sont discutés à la lumière de la conception constructiviste de l émotion en accord avec une approche incarnée et située de la cognition.The constructivist approach of emotion considers that emotional features are not intrinsic properties of objects but are rather constructed right here, right now during the sensorimotor interactions between an individual and his environment. Our objective in this work was to demonstrate the mutual effects of action and emotional evaluation, grounded on the hedonic character of motor fluency (i.e. the ease with which an action is executed). We manipulated motor fluency by the use of lateralized hand movements in a valence judgment task. Indeed, valence and laterality appear to be linked since our dominant side is associated to positive valence (Casasanto, 2009). We compared conditions based on the congruency and non-congruency between the valence of items and the affective connotation of response movements. Our results indicated bidirectional influences of actions and evaluation based on two separate processes. On one hand during valence judgment, a compatibility effect facilitated the execution of a movement that was consistent due to motor fluency. On the other hand an attribution effect allowed the fluency of a movement to induce variations in the evaluation of neutral and emotional words. Furthermore, our works demonstrated the impact of the response device (orientation of a valence judgment scale and localization of response keys) on emotional judgment, underlying the situated character of evaluation. Those results are discussed in the light of the constructivist conception of emotion, in accordance with an embodied and situated approach of cognition.MONTPELLIER-BU Lettres (341722103) / SudocSudocFranceF

Biases in evaluation of neutral words due to motor compatibility effect

International audienceThis study aims to demonstrate the effect of action fluency on emotional evaluation, specifically to show that neutral words can be evaluated positively or negatively depending on motor activity and evaluative setting. Right-handers naturally tend to associate positive (negative) valence to the right (left) part of space (Casasanto, 2009). We extend these associations to lateralized behaviors by studying the combined effect of motor fluency of lateral arm movements and the evaluative scale on the subjective evaluation of neutral words. Three experiments evidenced that, for right-handers, the realization of fluent rightward arm movements and the use of an evaluative scale congruent with their valence/laterality associations (left negative, right positive) led to a positive evaluation of neutral words, while non-fluent leftward movements and an incongruent scale led to a negative evaluation. This study demonstrates that emotion–action associations are experience-based, and influenced by functional and situational constraints

Effect of an unrelated fluent action on word recognition: a case of motor discrepancy

International audienceIt is now well established that motor fluency affects cognitive processes, including memory. In two experiments participants learned a list of words and then performed a recognition task. The original feature of our procedure is that before judging the words they had to perform a fluent gesture (i.e., typing a letter dyad). The dyads comprised letters located on either the right or left side of the keyboard. Participants typed dyads with their right or left index finger; the required movement was either very small (dyad composed of adjacent letters, Experiment 1) or slightly larger (dyad composed of letters separated by one key, experiment 2). The results show that when the gesture was performed in the ipsilateral space the probability of recognizing a word increased (to a lesser extent it is the same with the dominant hand, experiment 2). Moreover, a binary regression logistic highlighted that the probability of recognizing a word was proportional to the speed by which the gesture was performed. These results are discussed in terms of a feeling of familiarity emerging from motor discrepancy

Bidirectional Influences of Emotion and Action in Evaluation of Emotionally-Connoted Words

The goal of this review is to present the embodied character of emotionally-connoted language through the study of the mutual influences of affective language and motor action. After a brief definition of the embodied approach of cognition, the activity of language understanding is presented as an off-line embodied process implying sensory-motor resonance. Then the bidirectional character of influences between language and action will be addressed in both behavioral and neuropsychological studies, illustrated by the specific case of emotionally-connoted language. These reciprocal effects are grounded on the motor correspondence between action and the motor dimension of language, emerging from a diversity of source such as adaptive motivation, past experiences, body specificities, or motor fluency

Influence of Language on Colour Perception: A Simulationist Explanation

“How can perception be altered by language?” is the fundamental question of this article. Indeed, various studies have pointed out the influence of colour-related knowledge on object and colour perception, evoked by linguistic stimuli. Here the relevance of the simulationist approach is assumed in order to explain this influence, where the understanding of colour-related words or sentences involves a process of colour simulation that is supported by a neuronal network partially similar to the network involved in colour perception. Consequently, colour-related knowledge and colour perception can interact through a process of pattern interference. In support of this idea, studies are discussed showing priming effects between colour simulation and colour perception, but two limitations are also raised. Firstly, these works all used between-category colour discrimination tasks that allow the intervention of lexical processes that can also explain priming. Secondly, these works control the congruency link between prime and target at the level of ‘colour category’, and no demonstration is made of an influence at the level of specific hues. Consequently, the simulationist view of language/perception interactions seems an interesting way to thinking but more experimens are needed in order to overcome some limitations

Alzheimer's Disease: Advances in Drug Development.

International audienceAs of 2018, Alzheimer's disease (AD) is the most common form of neurodegenerative dementia. It contributes to a progressive neuron loss, deterioration of memory, and cognitive impairment. Current therapies may provide a symptomatic benefit, but do not treat the underlying process. Ongoing researches focus on understanding the causal mechanisms and finding neuropathological hallmarks of AD. Therapeutic approaches targeting senile plaques or neurofibrillary tangles have not yet resulted in a significant cognitive improvement. However, recent data according to the analysis of AD clinical trials (clinicaltrials.gov database) show promising results. This literature review aims at summarizing the recent advances and at highlighting the most promising results of the ongoing researches. It compares the merits of small-molecules, antibodies, cell, and gene-based therapies and emphasizes the need for treatment at earlier stages of the disease