French President Emmanuel Macron speaks flanked by Ana Maiques, CEO of Neuroelectrics, a company aiming to change the way we interact with the brain, and Sebastian Siemiatkowski, CEO and Co-founder of online payments provider KLARNA, during a conference entitled "A Conversation With European Scale-Ups" at the VivaTech startup and tech event which fifth edition is taking place from June 16 to 19 at the Expo Porte de Versailles, and online, in Paris, France June 16, 2021. Alain Jocard/Pool via REUTERS

French President Emmanuel Macron listens to Ana Maiques, CEO of Neuroelectrics, a company aiming to change the way we interact with the brain, during a conference entitled "A Conversation With European Scale-Ups" at the VivaTech startup and tech event which fifth edition is taking place from June 16 to 19 at the Expo Porte de Versailles, and online, in Paris, France June 16, 2021. Alain Jocard/Pool via REUTERS

A view shows Lion's Mound raised on the battlefield of Waterloo in Braine-l'Alleud, Belgium, May 11, 2021. Picture taken with a drone. Picture taken on May 11, 2011. REUTERS/Bart Biesemans

A view shows Lion's Mound raised on the battlefield of Waterloo in Braine-l'Alleud, Belgium, May 11, 2021. Picture taken with a drone. Picture taken on May 11, 2011. REUTERS/Bart Biesemans

A view shows Lion's Mound raised on the battlefield of Waterloo in Braine-l'Alleud, Belgium, May 11, 2021. Picture taken with a drone. Picture taken on May 11, 2011. REUTERS/Bart Biesemans

A view shows Lion's Mound raised on the battlefield of Waterloo in Braine-l'Alleud, Belgium, May 11, 2021. Picture taken with a drone. Picture taken on May 11, 2011. REUTERS/Bart Biesemans

The painting "Napoleon I at Fontainebleau, 31 March, 1814" by Paul Delaroche (1797-1856) is displayed at Waterloo Battlefield Museum in Braine-L'Alleud, before being put on auction by Bonhams for the bicentenary of Napoleon's death, Belgium, May 11, 2021. Picture taken May 11, 2021. REUTERS/Johanna Geron

A Madras and the shirt worn by Napoleon on St Helena are displayed at Waterloo Battlefield Museum in Braine-L'Alleud, before being put on auction by Bonhams for the bicentenary of Napoleon's death, Belgium, May 11, 2021. Picture taken May 11, 2021. REUTERS/Johanna Geron

A detail of the shirt worn by Napoleon on St Helena is displayed at Waterloo Battlefield Museum in Braine-L'Alleud, before being put on auction by Bonhams for the bicentenary of Napoleon's death, Belgium, May 11, 2021. Picture taken May 11, 2021. REUTERS/Johanna Geron

A shirt worn by Napoleon on St Helena is displayed at Waterloo Battlefield Museum in Braine-L'Alleud, before being put on auction by Bonhams for the bicentenary of Napoleon's death, Belgium, May 11, 2021. Picture taken May 11, 2021. REUTERS/Johanna Geron

A police officer wearing a patch reading, "vaccinated", stands guard next to a car with a card on it during a protest against the government measures to curb the spread of the coronavirus disease (COVID-19) in Weimar, Germany, May 1, 2021. The card reads, "be brave to use your brain". REUTERS/Kai Pfaffenbach

Flowers and a card lie on a police car amid the outbreak of the coronavirus disease (COVID-19), in Weimar, Germany, May 1, 2021. The card reads, "be brave to use your brain". REUTERS/Kai Pfaffenbach

Lash Fary, founder of Distinctive Assets, shows a brain sensing headband to be included in the Academy Awards gift bag in Los Angeles, California, U.S., April 14, 2021. Picture taken April 14, 2021. REUTERS/Mario Anzuoni

Former U.S. Rep. Gabby Giffords (D-AZ), who resigned her seat in Congress due to a severe brain injury suffered during an assassination attempt, is flanked by U.S. Representatives' Lucy McBath (D-GA) and Mike Thompson (D-CA) as they walk into the new Gun Violence Memorial, an installation featuring 38,000 silk white roses in 4,000 vases to commemorate the roughly 40,000 Americans who die annually in gun violence, on the National Mall in Washington, U.S., April 14, 2021. REUTERS/Carlos Barria?

Former U.S. Rep. Gabby Giffords (D-AZ), who resigned her seat in Congress due to a severe brain injury suffered during an assassination attempt, is flanked by U.S. Representatives Lucy McBath (D-GA) and Mike Thompson (D-CA) as they walk into the new Gun Violence Memorial on the National Mall in the foreground of the U.S. Capitol in Washington, U.S., April 14, 2021. REUTERS/Carlos Barria

Former U.S. Rep. Gabby Giffords (D-AZ), who resigned her seat in Congress due to a severe brain injury suffered during an assassination attempt, walks with U.S. Rep. Mike Thompson (D-CA) at the new Gun Violence Memorial on the National Mall in Washington, U.S., April 14, 2021. REUTERS/Carlos Barria

Former U.S. Rep. Gabby Giffords (D-AZ), who resigned her seat in Congress due to a severe brain injury suffered during an assassination attempt, is flanked by House Speaker Nancy Pelosi (D-CA) and Rep. Mike Thompson (D-CA) as she speaks during a news conference at the new Gun Violence Memorial on the National Mall in Washington, U.S., April 14, 2021. REUTERS/Carlos Barria

Former U.S. Rep. Gabby Giffords (D-AZ), who resigned her seat in Congress due to a severe brain injury suffered during an assassination attempt, speaks during a news conference at the new Gun Violence Memorial on the National Mall in Washington, U.S., April 14, 2021. REUTERS/Carlos Barria

Former U.S. Rep. Gabby Giffords (D-AZ), who resigned her seat in Congress due to a severe brain injury suffered during an assassination attempt, walks with U.S. Rep. Mike Thompson (D-CA) at the new Gun Violence Memorial on the National Mall in Washington, U.S., April 14, 2021. The installation features 38,000 silk white roses in 4,000 vases to commemorate the roughly 40,000 Americans who die annually in gun violence. REUTERS/Carlos Barria

A thermometer belonging to long COVID sufferer Amaia Artica, 42, is seen photographed through blue plastic, in Pamplona, Spain, March 16, 2021. The photograph was taken through blue plastic to visualise the effects of long COVID. Permanent fatigue, daily fever, muscle and joint pain, insomnia and constant mental lapses have kept Artica from doing the job she loves at a nursery school since she got infected with coronavirus during the first wave of the disease. Her brain fogginess is so acute that there are days she finds herself staring at a blank wall, feeling "out of it". Loss for words, inability to remember how to do simple tasks and overall forgetfulness have become part of her life. Artica suffers from daily low-grade fever. "My family doctor has been very supportive of me throughout this ordeal, but not all doctors have been that understanding. A specialist doctor told me to stop taking my temperature, that if I didn't pay attention to it, it would go away because it was all in my head." REUTERS/Susana Vera SEARCH "SPAIN LONGCOVID" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES

Long COVID sufferer Amaia Artica, a 42-year-old nursery school worker, poses for a photograph taken through blue plastic, in Pamplona, Spain, March 16, 2021. The photograph was taken through blue plastic to visualise the effects of long COVID. Permanent fatigue, daily fever, muscle and joint pain, insomnia and constant mental lapses have kept Artica from doing the job she loves at a nursery school since she got infected with coronavirus during the first wave of the disease. Her brain fogginess is so acute that there are days she finds herself staring at a blank wall, feeling "out of it". Loss for words, inability to remember how to do simple tasks and overall forgetfulness have become part of her life. Artica suffers from daily low-grade fever. "My family doctor has been very supportive of me throughout this ordeal, but not all doctors have been that understanding. A specialist doctor told me to stop taking my temperature, that if I didn't pay attention to it, it would go away because it was all in my head." REUTERS/Susana Vera SEARCH "SPAIN LONGCOVID" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES

A combination picture shows long COVID sufferer Amaia Artica, 42, posing for a photograph taken through blue plastic, and a thermometer belonging to Artica photographed through blue plastic, in Pamplona, Spain, March 16, 2021. The photographs were taken through blue plastic to visualise the effects of long COVID. Permanent fatigue, daily fever, muscle and joint pain, insomnia and constant mental lapses have kept Artica from doing the job she loves at a nursery school since she got infected with coronavirus during the first wave of the disease. Her brain fogginess is so acute that there are days she finds herself staring at a blank wall, feeling "out of it". Loss for words, inability to remember how to do simple tasks and overall forgetfulness have become part of her life. Artica suffers from daily low-grade fever. "My family doctor has been very supportive of me throughout this ordeal, but not all doctors have been that understanding. A specialist doctor told me to stop taking my temperature, that if I didn't pay attention to it, it would go away because it was all in my head." REUTERS/Susana Vera SEARCH "SPAIN LONGCOVID" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES

A model displays an outfit created by Brain&Beast fashion house during the Mercedes Benz Fashion Week, amid the coronavirus disease (COVID-19) outbreak in Madrid, Spain, April 9, 2021. REUTERS/Sergio Perez

A model displays an outfit created by Brain&Beast fashion house during the Mercedes Benz Fashion Week, amid the coronavirus disease (COVID-19) outbreak in Madrid, Spain, April 9, 2021. REUTERS/Sergio Perez

A model displays an outfit created by Brain&Beast fashion house during the Mercedes Benz Fashion Week, amid the coronavirus disease (COVID-19) outbreak in Madrid, Spain, April 9, 2021. REUTERS/Sergio Perez

A model displays an outfit created by Brain&Beast fashion house during the Mercedes Benz Fashion Week, amid the coronavirus disease (COVID-19) outbreak in Madrid, Spain, April 9, 2021. REUTERS/Sergio Perez

A model displays an outfit created by Brain&Beast fashion house during the Mercedes Benz Fashion Week, amid the coronavirus disease (COVID-19) outbreak in Madrid, Spain, April 9, 2021. REUTERS/Sergio Perez

A model displays an outfit created by Brain&Beast fashion house during the Mercedes Benz Fashion Week, amid the coronavirus disease (COVID-19) outbreak in Madrid, Spain, April 9, 2021. REUTERS/Sergio Perez

A model displays an outfit created by Brain&Beast fashion house during the Mercedes Benz Fashion Week, amid the coronavirus disease (COVID-19) outbreak in Madrid, Spain, April 9, 2021. REUTERS/Sergio Perez

A model displays an outfit created by Brain&Beast fashion house during the Mercedes Benz Fashion Week, amid the coronavirus disease (COVID-19) outbreak in Madrid, Spain, April 9, 2021. REUTERS/Sergio Perez

Models display outfits created by Brain&Beast fashion house during the Mercedes Benz Fashion Week, amid the coronavirus disease (COVID-19) outbreak in Madrid, Spain, April 9, 2021. REUTERS/Sergio Perez

U.S. President Joe Biden receives a blown kiss from former U.S. Rep. Gabby Giffords (D-AZ), who resigned her seat in Congress due to a severe brain injury suffered during an assassination attempt, during an event to announce executive actions on gun violence prevention in the Rose Garden at the White House in Washington, U.S., April 8, 2021. REUTERS/Kevin Lamarque TPX IMAGES OF THE DAY

U.S. President Joe Biden bumps elbows with former U.S. Rep. Gabby Giffords (D-AZ), who resigned her seat in Congress due to a severe brain injury suffered during an assassination attempt, during an event to announce executive actions on gun violence prevention in the Rose Garden at the White House in Washington, U.S., April 8, 2021. REUTERS/Kevin Lamarque

U.S. President Joe Biden bumps elbows with former U.S. Rep. Gabby Giffords (D-AZ), who resigned her seat in Congress due to a severe brain injury suffered during an assassination attempt, during an event to announce executive actions on gun violence prevention in the Rose Garden at the White House in Washington, U.S., April 8, 2021. REUTERS/Kevin Lamarque

Former U.S. Rep. Gabby Giffords (D-AZ), who resigned her seat in Congress due to a severe brain injury suffered during an assassination attempt, blows a kiss and bumps elbows with U.S. President Joe Biden during an event to announce executive actions on gun violence prevention in the Rose Garden at the White House in Washington, U.S., April 8, 2021. REUTERS/Kevin Lamarque

U.S. President Joe Biden bumps elbows with former U.S. Rep. Gabby Giffords (D-AZ), who resigned her seat in Congress due to a severe brain injury suffered during an assassination attempt, during an event to announce executive actions on gun violence prevention in the Rose Garden at the White House in Washington, U.S., April 8, 2021. REUTERS/Kevin Lamarque

Former U.S. Rep. Gabby Giffords (D-AZ), who resigned her seat in Congress due to a severe brain injury suffered during an assassination attempt, is seated prior to U.S. President Joe Biden's arrival to announce executive actions on gun violence prevention in the Rose Garden at the White House in Washington, U.S., April 8, 2021. REUTERS/Kevin Lamarque

Former U.S. Rep. Gabby Giffords (D-AZ), who resigned her seat in Congress due to a severe brain injury suffered during an assassination attempt, is seated prior to U.S. President Joe Biden's arrival to announce executive actions on gun violence prevention in the Rose Garden at the White House in Washington, U.S., April 8, 2021. REUTERS/Kevin Lamarque

U.S. President Joe Biden stops to view a Varian Medical Systems brain scanning and imaging device as he visits the James Cancer Hospital and Solove Research Institute in Columbus, Ohio, U.S., March 23, 2021. REUTERS/Leah Millis

U.S. President Joe Biden is accompanied by Dr. Arnab Chakravarti, chair of Department of Radiation Oncology, and U.S. Rep. Joyce Beatty (D-OH) while viewing a brain scanning and imaging device as he visits the James Cancer Hospital and Solove Research Institute in Columbus, Ohio, U.S., March 23, 2021. REUTERS/Leah Millis

U.S. President Joe Biden views a brain scanning and imaging device as he visits the James Cancer Hospital and Solove Research Institute in Columbus, Ohio, U.S., March 23, 2021. REUTERS/Leah Millis

U.S. President Joe Biden views a brain scanning and imaging device as he visits the James Cancer Hospital and Solove Research Institute in Columbus, Ohio, U.S., March 23, 2021. REUTERS/Leah Millis

U.S. President Joe Biden views a brain scanning and imaging device as he visits the James Cancer Hospital and Solove Research Institute in Columbus, Ohio, U.S., March 23, 2021. REUTERS/Leah Millis

Food that contains approximately 8,200 calories that Samuel, 47, would typically consume in one day before he had brain surgery following a stroke, is displayed for a photograph at his home in Mexico City, Mexico, February 3, 2021. "I regret not taking care of myself, on having annual check-ups like blood tests to check my sugar levels, cholesterol," said Samuel. "With obesity, I developed diabetes and had an operation on my head for a blood clot due to a stroke." Nutritionist Betzabe Salgado, who works at the Hospital Infantil de Mexico Federico Gomez, calculated the calorie amount. REUTERS/Carlos Jasso SEARCH "JASSO OBESITY" FOR THIS STORY. SEARCH "WIDER IMAGE" FOR ALL STORIES. TPX IMAGES OF THE DAY. THE IMAGES SHOULD ONLY BE USED TOGETHER WITH THE STORY - NO STAND-ALONE USES.

Magician Stanley Itoya, whose stage name is Felven Brain, performs on stage in Lagos, Nigeria December 1, 2020. Picture taken December 1, 2020. REUTERS/Seun Sanni

People block the view before an ambulance carrying Argentine soccer great Diego Maradona can leave the clinic where Maradona underwent brain surgery, in Olivos, on the outskirts of Buenos Aires, Argentina November 11, 2020. REUTERS/Agustin Marcarian

An ambulance carrying Argentine soccer great Diego Maradona leaves the clinic where Maradona underwent brain surgery, in Olivos, on the outskirts of Buenos Aires, Argentina November 11, 2020. REUTERS/Agustin Marcarian

An ambulance carrying Argentine soccer great Diego Maradona leaves the clinic where Maradona underwent brain surgery, in Olivos, on the outskirts of Buenos Aires, Argentina November 11, 2020. REUTERS/Agustin Marcarian

An ambulance carrying Argentine soccer great Diego Maradona leaves the clinic where Maradona underwent brain surgery, in Olivos, on the outskirts of Buenos Aires, Argentina November 11, 2020. REUTERS/Agustin Marcarian

An ambulance carrying Argentine soccer great Diego Maradona leaves the clinic where Maradona underwent brain surgery, in Olivos, on the outskirts of Buenos Aires, Argentina November 11, 2020. REUTERS/Agustin Marcarian

An ambulance carrying Argentine soccer great Diego Maradona leaves the clinic where Maradona underwent brain surgery, in Olivos, on the outskirts of Buenos Aires, Argentina November 11, 2020. REUTERS/Agustin Marcarian

People block the view before an ambulance carrying Argentine soccer great Diego Maradona can leave the clinic where Maradona underwent brain surgery, in Olivos, on the outskirts of Buenos Aires, Argentina November 11, 2020. REUTERS/Agustin Marcarian

People block the view before an ambulance carrying Argentine soccer great Diego Maradona can leave the clinic where Maradona underwent brain surgery, in Olivos, on the outskirts of Buenos Aires, Argentina November 11, 2020. REUTERS/Agustin Marcarian

Giannina Maradona, daughter of Argentine soccer great Diego Maradona, drives a car after leaving the clinic where her father underwent brain surgery, in Olivos, on the outskirts of Buenos Aires, Argentina November 11, 2020. REUTERS/Agustin Marcarian

Giannina Maradona, daughter of Argentine soccer great Diego Maradona, drives a car after leaving the clinic where her father underwent brain surgery, in Olivos, on the outskirts of Buenos Aires, Argentina November 11, 2020. REUTERS/Agustin Marcarian

Giannina Maradona, daughter of Argentine soccer great Diego Maradona, drives a car after leaving the clinic where her father underwent brain surgery, in Olivos, on the outskirts of Buenos Aires, Argentina November 11, 2020. REUTERS/Agustin Marcarian

Personal physician of Argentine soccer great Diego Maradona, Dr. Leopoldo Luque, rides a motorcycle as he prepares to speak to the media outside the clinic where Maradona underwent brain surgery, in Olivos, on the outskirts of Buenos Aires, Argentina November 11, 2020. REUTERS/Agustin Marcarian

Personal physician of Argentine soccer great Diego Maradona, Dr. Leopoldo Luque, speaks to the media outside the clinic where Maradona underwent brain surgery, in Olivos, on the outskirts of Buenos Aires, Argentina November 11, 2020. REUTERS/Agustin Marcarian

Matias Morla, lawyer of Argentine soccer great Diego Maradona, speaks to the press outside the clinic where Maradona underwent brain surgery, in Olivos, on the outskirts of Buenos Aires, Argentina November 11, 2020. REUTERS/Agustin Marcarian

Matias Morla, lawyer of Argentine soccer great Diego Maradona, speaks to the press outside the clinic where Maradona underwent brain surgery, in Olivos, on the outskirts of Buenos Aires, Argentina November 11, 2020. REUTERS/Agustin Marcarian