Investigation of moral cognition using the tDCS.

100 %
0 %
Information about Investigation of moral cognition using the tDCS.
Science

Published on May 30, 2014

Author: Margaux_Devau

Source: slideshare.net

Description

tDCS Study in SPRINGLAB (neurosciences laboratory at UCL) on the investigation of moral cognition and the understanding of the underlying cognitive mechanisms.

1. Introduction 2. Hypothesis 3. Methodology 4. Results 5. General discussion

Moral judgment = A process that integrates informations about intentional properties and consequences of the behavior made by a person. Cushman, F. (2008)

There are : ①Evaluation of the intention to harm somebody (=mental state of agent) ②Evaluation of the consequence of an action Intentional factors > Consequence factors. Cushman, F. (2008)

The rTPJ (Right Temporo-Parietal Junction) is responsible for taking into consideration intention’s informations in moral judgments. Young et al., 2010 Activation rTPJ  consideration of the intention Activation rTPJ  consideration of the intention

tDCS study= the modulation of TPJ modulate: • Social cognitive abilities of subjects • Abilities to take perspective of other person Santiesteban (2012) fMRI study = the activation of the rTPJ is modulated according to stories about accidental or intentional harm. Koster-Hale (2013) tDCS study = investigation of the activation of rTPJ moral judgment (with stories about accidental or intentional harm). Dongo Miletich (2013)

Aim of the study = To test the causal relation between : ① The severity of the judgment of the action ② The right Temporo-Parietal Junction Table 1. The scenarios manipulate orthogonally the intention to harm and the consequence of the action

We hypothesized that : In « accidental harm » (INCH) condition : the severity of judgments in rTPJ stimulation the severity of judgments in rTPJ inhibition In « attempted harm »(IHCN) condition : the severity of judgments in rTPJ stimulation the severity of judgments in rTPJ inhibition

Participants : 24 healthy volunteers (12 women, 12 men, age range 18-30) right-handed and speaking French currently. Method: • Using tDCS over the rTPJ Fig 1. Illustration of tDCS procedure

Stimulation electrode over CP6 Reference electrode over C3 Current intensity : 1,5 mA Fig 2. Illustration of 10-20 system positioning

Participants were assigned to 1 of 3 tDCS conditions following a double-blind procedure : • Anodal • Cathodal • Sham

Parameters : • the gravity/seriousness of consequences • the nature of the consequences • the matching between protagonist’s names • the use of adults protagonist (with the same gender) • the physical and emotional closeness between protagonists. • the “word framing effect” • the keyboard = placed in vertical orientation • the current intensity = 1,5mA • Size electrodes : 25cm2 Christensen & Gomila (2012); Dongo Miletich (2013)

Procedure : Task : Fig 3. Procedure of experiment

1. Background information defining the context 2. Protagonist’s intention and action 3. Consequence of an action Fig 4. Task of moral judgment +

Fig 6. Example of "accidental harm" condition

Fig 7. Example of " attempted harm" condition

Experimental design : 3 x 2 x 2 3 Independent Variables : ① Group : Anodal / Cathodal / Sham ② Time : Before / After ③ Scenario type (= condition): Attempted harm / Accidental harm 1 Dependent Variable : The severity of the judgment of the action

 Effect of scenarios type : F(27,787), p = .000 ✗ No time effect ✗ No group effect (anodal,cathodal,sham)

Fig 5. Illustration of data, pre and post tDCS

Comments and limits of this study : • Number of participants: few subjects ? • Size and position of the reference electrode : current diffusion problem, and, too close of the left-TPJ ? • Problem of sensitivity of measurement by using Likert scale ? • To use yes/no questions ? • tDCS isn’t usable in moral cognition ? • rTPJ = area of integrating intention information ?

Add a comment

Related presentations

How organisms adapt and survive in different environment.

Aplicación de ANOVA de una vía, modelo efectos fijos, en el problema de una empres...

Teori pemetaan

Teori pemetaan

November 10, 2014

learning how to mapping

Libros: Dra. Elisa Bertha Velázquez Rodríguez

Materi pelatihan gis

Materi pelatihan gis

November 10, 2014

learning GIS

In this talk we describe how the Fourth Paradigm for Data-Intensive Research is pr...

Related pages

Preliminary investigation of the effects of γ -tACS on ...

... and social cognition ... tDCS or sham tDCS), with working memory assessed using ... Fitzgerald PB (2014) An investigation into the effects of tDCS ...
Read more

DIY tDCS

So far I’ve tracked my progress with the game without using the tDCS, ... of human learning and cognition ... term investigations of how long ...
Read more

Researchers’ perspectives on scientific and ethical ...

Scientific Reports 5 ... ratings for cognition, but tDCS for motor research was rated as ... concerns with using tDCS for ...
Read more

Rethinking the thinking cap : Ethics of neural enhancement ...

Ethics of neural enhancement using noninvasive brain stimulation ... recent investigation, tDCS of the left dorsolateral ... moral thought and behavior.
Read more

The SpringLab - Google Sites

Moral Cognition. A summary of our ... Our main methods of investigation: ... Effects of brain stimulation (tDCS) Brain activity measurements (fMRI, ERPs)
Read more

The Cognitive kit - A tDCS Device

The Cognitive kit is a tDCS device, ... and the tDCS community are using it successfully to learn languages, ... The Cognitive kit.
Read more

The neural basis of human moral cognition : Article ...

How does moral cognition relate to ... Using a task that engaged ... a functional magnetic resonance imaging investigation of basic and moral ...
Read more

An fMRI Investigation of Spontaneous Mental State ...

... Using tDCS to Explore the Role of the Right Temporo ... An fMRI investigation of the effects of belief in ... Emotion and Moral Cognition.
Read more

tDCS Overview – Transcranial Direct Current Stimulation ...

For tDCS concerns not using the 1x1 platform and ... are the industry standard for clinical trials with transcranial Direct Current Stimulation (tDCS).
Read more

Warning over electrical brain stimulation - BBC News

Warning over electrical brain stimulation. ... involved in high-level cognition such as ... they "seemed to be getting angry frequently" after using TDCS.
Read more