̽»¨¾«Ñ¡

Neurobiology of Motor Actions – Abdel El Manira group

We are interested in understanding the complex processes by which the brain translates intentions into actions. Our particular focus lies on investigating neural circuits within the brainstem and spinal cord, which play a pivotal role in generating movements such as those enabling us to walk or run.

Part of the:
Abdel El Manira, Professor at the Department of Neuroscience, ̽»¨¾«Ñ¡ Photo: Stefan Zimmerman
External website

El Manira Lab

We are interested in understanding how the brain transforms intentions into actions. An important task of the brain is to extract and process information from the outside world and to transform it into appropriate motor actions. The implementation of these motor actions is achieved through the action of neuronal circuits in the brainstem and spinal cord, which in turn activate precise sequences of limb and body muscles. The motor pathway – from brain to muscle – involves diverse neuron types that form functional circuits that endow animals with a repertoire of mental and motor faculties. A major goal of our laboratory is to decipher these neuronal circuits and to understand the principles underlying the versatility of motor actions. We have a special focus on neural circuits in the brainstem and spinal cord responsible for the generation of movements such as those enabling us to walk or run.

Our research

The goal of our research is to decipher the organizational logic together with the intricate coding and processing that allow the spinal network to produce locomotor movements with varying speed and force. To achieve this, our laboratory has pioneered the use of the adult zebrafish, which lends itself to a detailed experimental analysis using a variety of state-of-the-art tools.

Thus far, our studies have revealed the organization and pattern of recruitment of moto­neurons and excitatory interneurons during swimming. Our recent results show that motoneurons are divided into four distinct pools with a somatotopic organization in the motor column depending on the type of muscle they innervate. These motoneuron pools repre­sent discrete modules that are deployed incrementally with increasing swimming speed.

In addition, we have identified a class of excitatory interneurons as the substrate for the excitatory drive that endows the spinal network with the capacity to generate swimming.

Finally, we have uncovered a novel principle of organization of the spinal locomotor network consisting of ensembles of microcircuits that act as an intrinsic gearshift. Each micro­circuit encompasses a subset of motoneurons and excitatory interneurons that are incrementally recruited to increase the swimming speed.

Image: Abdel El Manira

Thus, novel insights into the principles governing locomotor microcircuits organization and function are beginning to emerge from our studies that may have general implications beyond the study of circuits for motor behavior.

Principles governing recruitment of neurons during locomotion. At slow swimming speeds only slow microcircuits activating slow muscles are recruited. Fast microcircuits are deployed with increased speed and activate fast muscles.

Publications

Selected publications

  • Article: NATURE. 2016;529(7586):399-402
    Song J; Ampatzis K; Bjoernfors ER; El Manira A
  • Article: NEURON. 2014;83(4):934-943
    Ampatzis K; Song J; Ausborn J; El Manira A
  • Article: JOURNAL OF NEUROSCIENCE. 2014;34(1):134-139
    Ljunggren EE; Haupt S; Ausborn J; Ampatzis K; El Manira A
  • Article: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA. 2012;109(52):E3631-E3639
    Ausborn J; Mahmood R; El Manira A
  • Article: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA. 2012;109(14):5511-5516
    Eklof-Ljunggren E; Haupt S; Ausborn J; Dehnisch I; Uhlen P; Higashijima S-I; El Manira A

All publications from group members

  • Journal article: JOURNAL OF CELL SCIENCE. 2024;137(7):jcs261553
    Sabharwal V; Boyanapalli SPP; Shee A; Nonet ML; Nandi A; Chaudhuri D; Koushika SP
  • Article: NATURE NEUROSCIENCE. 2024;27(1):78-89
    Pallucchi I; Bertuzzi M; Madrid D; Fontanel P; Higashijima S-I; El Manira A
  • Article: DIABETOLOGIA. 2024;67(1):137-155
    Ren L; Charbord J; Chu L; Kemas AM; Bertuzzi M; Mi J; Xing C; Lauschke VM; Andersson O
  • Article: CURRENT OPINION IN NEUROBIOLOGY. 2023;82:102760
    El Manira A
  • Preprint: BIORXIV. 2023
    Sabharwal V; Boyanapalli SPP; Shee A; Nonet ML; Nandi A; Chaudhuri D; Koushika SP
  • Article: NEURON. 2023;111(3):372-386.e4
    Berg EM; Mrowka L; Bertuzzi M; Madrid D; Picton LD; El Manira A
  • Article: STAR PROTOCOLS. 2022;3(4):101868
    Bertuzzi M; Pallucchi I; El Manira A
  • Doctoral thesis: 2022
    Pallucchi I
  • Article: CURRENT BIOLOGY. 2022;32(16):3515-3528.e4
    Picton LD; Bjornfors ER; Fontanel P; Pallucchi I; Bertuzzi M; El Manira A
  • Article: CELL REPORTS. 2022;39(2):110654
    Pallucchi I; Bertuzzi M; Michel JC; Miller AC; El Manira A
  • Journal article: GENETICS. 2021;219(3):iyab139
    Kulkarni SS; Sabharwal V; Sheoran S; Basu A; Matsumoto K; Hisamoto N; Ghosh-Roy A; Koushika SP
  • Article: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA. 2021;118(42):e2106785118
    Guan NN; Xu L; Zhang T; Huang C-X; Wang Z; Dahlberg E; Wang H; Wang F; Pallucchi I; Hua Y; El Manira A; Song J
  • Article: ELIFE. 2021;10:e65758
    Liu K-C; Villasenor A; Bertuzzi M; Schmitner N; Radros N; Rautio L; Mattonet K; Matsuoka RL; Reischauer S; Stainier DYR; Andersson O
  • Article: NATURE COMMUNICATIONS. 2021;12(1):4857
    Chang W; Pedroni A; Bertuzzi M; Kizil C; Simon A; Ampatzis K
  • Article: NEURON. 2021;109(7):1188-1201.e7
    Picton LD; Bertuzzi M; Pallucchi I; Fontanel P; Dahlberg E; Bjornfors ER; Iacoviello F; Shearing PR; El Manira A
  • Journal article: FRONTIERS IN PHARMACOLOGY. 2021;12:794680
    Sebih F; Mokrane N; Fontanel P; Kayatekin M; Kaabeche M; Guiramand J; Cohen-Solal C; Cens T; Rousset M; Charnet P; Ferreira M-CDJ; Thibaud J-B; Menard C; Cantel S; Rolland V; Vignes M; Roussel J
  • Article: NEURON. 2020;105(6):1048-1061.e4
    Song J; Pallucchi I; Ausborn J; Ampatzis K; Bertuzzi M; Fontanel P; Picton LD; El Manira A
  • Review: PHYSIOLOGICAL REVIEWS. 2020;100(1):271-320
    Grillner S; El Manira A
  • Article: SCIENCE. 2019;365(6454):695-699
    Abdo H; Calvo-Enrique L; Lopez JM; Song J; Zhang M-D; Usoskin D; El Manira A; Adameyko I; Hjerling-Leffler J; Ernfors P
  • Article: ENEURO. 2019;6(3):ENEURO.0106-ENEU19.2019
    Rajaram E; Kaltenbach C; Fischl MJ; Mrowka L; Alexandrova O; Grothe B; Hennig MH; Kopp-Scheinpflug C
  • Show more

Staff and contact

Group leader

All members of the group

Contact and visit us

Contact information for the Abdel El Manira research group at the Department of Neuroscience, ̽»¨¾«Ñ¡.

Postal address

Department of Neuroscience
̽»¨¾«Ñ¡, SE-171 77 Stockholm

Visiting address (visitors, couriers, etc.)

̽»¨¾«Ñ¡, Biomedicum, 4B
Solnavägen 9, SE-171 65 Solna

Delivery address (goods, parcels, etc.)

Tomtebodavägen 16, SE-171 65 Solna

̽»¨¾«Ñ¡, Biomedicum, Solnavägen 9

Work with us

Postdoc positions

We are looking for new postdocs to join our lab.

Please send your inquiries by e-mail to Abdel El Manira (abdel.elmanira@ki.se) and include a CV with publications and research experience as well as a brief outline of research interests.