Study of the Cerebral Bases of Tool Use and Tool Evolution (TOOLBOX)

Cerebral Bases of Tool Use and Tool Evolution

Tool use is considered to be the hallmark of complex cognitive adaptations that humans have achieved trough evolution, that provides an adaptive advantage to the human species. Even if nonhuman species do use tools too, human tool use is much more complex and sophisticated. Besides, only humans can make their tools evolve by improving them. If Man has special abilities for tool use, it has to be grounded in a specific neuroanatomical substrate. Humans and nonhumans share a similar prehension system located within the superior parietal lobe and the intraparietal sulcus. However, there is a human specificity : the surpramarginal gyrus within the left inferior parietal lobe is unique to Man, and could play a central role in tool use and tool evolution.

This project aims to study the neural correlates of human tool use with functional Magnetic Resonance Imaging (fMRI), to precise the cognitive mechanisms through which humans are able to use tools. We also wish to study what are the cognitive abilities that allow us to make our tools evolve by improving them, and the neural correlates associated.

Study Overview

• Status: Completed
• Conditions: Healthy
• Intervention / Treatment: Other: fMRI

• Study Type: Interventional
• Enrollment (Actual): 70
• Phase: Not Applicable

Contacts and Locations

Study Locations

• France
  • Lyon, France, 69002
    • Laboratoire d'Etude des Mécanismes Cognitifs (EMC) -Université Lumière Lyon 2

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 65 years (Adult, Older Adult)
• Accepts Healthy Volunteers: Yes
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• To be between the ages of 18 and 65 years old
• Having given an informed consent for the study
• Being right-handed
• Being registered with the French Social Security System

Exclusion Criteria:

• No signature on the consent form, including inability to read or write French.
• Neurologic or psychiatric illness, known or revealed durnig the inclusion visit
• Substance intake ( taking psychoactive medications or recreational drugs) on the day of the experiment
• Noise intolerance
• Minor person, pregnant or breastfeeding woman
• Persons under curatorship or deprived of civil rights or deprived of their freedom
• Unable to fill a questionnaire (severe cognitive troubles)
• Subjects must not have metallic or electronic implants in the body : pacemakers or pacemaker wires, open heart surgery, artificial heart valve, brain aneurysm surgery, middle ear implant, hearing aid, braces or extensive dental work, cataract surgery or lens implant, implanted mechanical or electrical device, or artificial limb or joint o foreign metallic objects in the body (bullets, BBs, pellets, schrapnel, or metalwork fragments) or current or past employment as machinists, welders or metal workers, tattoos near the head or neck regions, permanent makeup
• Claustrophobia

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Basic Science
• Allocation: Non-Randomized
• Interventional Model: Single Group Assignment
• Masking: None (Open Label)

Number of Arms

2

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
Other: Tool Use; The fMRI experimental conditions in this arm will allow us to study the activity of the brain when using tools. Here only the fMRI experimental session is necessary. Tasks proposed to the participants within the fMRI scanner will be related to tool use. They will have to solve mechanical problems, to judge the appropriateness of hand postures for using tools, and to judge if tools presented share the same context of use, the same functional goals, the same hand postures for using them.These experimental conditions related to the BOLD measures given by the fMRI technique will allow us to draw hypotheses on the neurocognitive mechanisms at work when we use tools.	Other: fMRI; Imaging examination
Other: Tool Evolution; The fMRI experimental conditions in this arm will allow us to study the activity of the brain when we improve tools. Here the fMRI experimental session will be complemented by a cognitive psychology experiment, where participants will be given a tool to improve. Tasks proposed to the participants within the fMRI scanner will be related to cognitive functions that could be implicated in improving tools : creativity, technical reasinoning, logic, empathy. The BOLD measures realted to these experimental condfitions will be related to the ability of the participant to improve a tool, through General Linear Modeling.	Other: fMRI; Imaging examination

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
BOLD effect	The measure will be the Blood Oxygenation Level Dependent measure (BOLD) as permitted with functional Magnetic Resonance Imaging. This BOLD level will be collected for every voxel in the imaged brain, and at regular time intervals (TR = 3") during the experimental session (about one hour). This is standard procedure for fMRI experiments. Functional magnetic resonance imaging measures brain activity by detecting changes associated with blood flow This technique relies on the fact that cerebral blood flow and neuronal activation are coupled. When an area of the brain is in use, blood flow to that region also increases. The primary form of fMRI uses the BOLD contrast in response to an experimental condition, allowing researchers to track changes in oxygen comsumption on the brain, and therefore brain activity. BOLD efefct is computed by assessing the different relaxation times (T1 and T2) in the brain, as T1 and T2 are different in function of regional cerebral blood flows.	1 hour

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Ability to improve a tool	Participants will be given metal wires and asked to build a tower as high as possible. For this, they will be able to observe the previous participant to inspire themselves. The measure collected will be the height of the tower, compared to the height of the tower of the previous participant.	20 minutes

Collaborators and Investigators

• Sponsor: Hospices Civils de Lyon
• Investigators: Principal Investigator: Yves ROSSETTI, MD, Hospices Civils de Lyon

Study record dates

Study Major Dates

• Study Start (Actual): November 14, 2018
• Primary Completion (Actual): June 19, 2019
• Study Completion (Actual): July 4, 2019

Study Registration Dates

• First Submitted: June 1, 2018
• First Submitted That Met QC Criteria: June 1, 2018
• First Posted (Actual): June 13, 2018

Study Record Updates

• Last Update Posted (Actual): June 22, 2021
• Last Update Submitted That Met QC Criteria: June 17, 2021
• Last Verified: June 1, 2021

More Information

Terms related to this study

• Keywords: neuroimaging; fMRI; Evolution; Tool
• Other Study ID Numbers: 69HCL18_0121

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No