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TI:"Laterodorsal tegmentum-ventral tegmental area projections encode positive reinforcement signals"
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DocumentLaterodorsal tegmentum-ventral tegmental area projections encode positive reinforcement signals2021

Reference code: PT/FB
Entity holding: BIAL Foundation
Location: S. Mamede do Coronado
Title:
BIAL Foundation Archive
Start date: 1994
History:
The BIAL Foundation was created in 1994 by Laboratórios BIAL in conjunction with the Council of Rectors of Portuguese Universities. BIAL’s Foundation mission is to foster the scientific study of Man from both the physical and spiritual perspectives.
Along the years the BIAL Foundation has developed an important relationship with the scientific community, first in Portugal and after worldwide. Today it is an institution of reference which aims to stimulate new researches that may help people, promote more health and contribute to new milestones to gain access to knowledge.
Among its activities the BIAL Foundation manages the BIAL Award, created in 1984, one of the most important awards in the Health field in Europe. The BIAL Award rewards both the basic and the clinical research distinguishing works of major impact in medical research.
The BIAL Foundation also assigns Scientific Research Scholarships for the study of neurophysiological and mental health in people, arousing the interest of researchers in the areas of Psychophysiology and Parapsychology.
To date the BIAL Foundation has supported 461 projects, more than 1000 researchers, with research groups in twenty-seven countries, resulting, until April 2013, in about 600 full papers, out of which 172 published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Since 1996 the BIAL Foundation organizes the Symposia entitled "Behind and Beyond the Brain", a Forum that gathers well renowned neurosciences speakers and the BIAL Foundation Fellows which are spread around the world.
Classified as an institution of public utility, the BIAL Foundation includes among its patrons the Portuguese President, the Portuguese Universities Rectors' Council and the Portuguese Medical Association.
URL: http://www.bial.com/pt/
Accessibility: By permission

Reference code: PT/FB/BL
Entity holding: BIAL Foundation
Title: BIAL Grants
Start date: 1994
History:
In 1994 the BIAL Foundation launched a programme of science research grants with the aim of encouraging the research into Man’s physical and mental processes, namely in fields still largely unexplored but which warrant further scientific analysis, as Psychophysiology and Parapsychology.
Since its launch, applications to the BIAL grants have been increasing. Up to now 461 projects have been supported, involving more than 1000 researchers from 27 countries.
The approved applications have benefited from grants in amounts comprised between €5,000 and €50, 000. The amount to be granted is fixed by the Scientific board according to the needs of each project.
The supported projects have originated, until April 2013, in about 600 full papers, 172 out of which were published in indexed international journals with an average impact factor of 3.6 and a substantial number of citations (1665).
Among the BIAL Foundation fellows is worth highlighting the presence of scientists from prestigious universities from the United States, United Kingdom, Australia, Russia, Germany, Japan, France, Canada, and many others.
The BIAL grants are promoted biannually.

Reference code: PT/FB/BL-2016
Location: BF-GMS
Title:
2016 Grants
Start date: 2017-01

Reference code: PT/FB/BL-2016-030
Location: BF-GMS
Title:
030 - Exploring the neural basis of motivation
Duration: 2017-01 - 2020-03
Researcher(s):
Ana João Rodrigues, Nivaldo Vasconcelos, Carina Cunha, Bárbara Coimbra, Laura Silva, Patrícia Monteiro, Sónia Borges, Pedro Morgado
Institution(s): Life and Health Sciences Research Institute - ICVS, School of Health Sciences, University of Minho, Braga (Portugal)
Contents: Contents:
Application form
Correspondence
Research Funding Agreement
Progress report
Final report
Author: Rodrigues, A. J.
Secondary author(s):
Vasconcelos, N., Cunha, C., Coimbra, B., Silva, L., Monteiro, P., Borges, S., Morgado, P.
Number of reproductions:
1
Keywords:
Reward / Reinforcement / Mesolimbic system / Behavior / Psychophysiology

Reference code: PT/FB/BL-2016-030.10
Location: BF-GMS
Title:
Laterodorsal tegmentum-ventral tegmental area projections encode positive reinforcement signals
Publication year: 2021
URL:
https://onlinelibrary.wiley.com/doi/10.1002/jnr.24931
Abstract/Results: ABSTRACT:
The laterodorsal tegmentum (LDT) is a brainstem nucleus classically involved in REM sleep and attention, and that has recently been associated with reward-related behaviors, as it controls the activity of ventral tegmental area (VTA) dopaminergic neurons, modulating dopamine release in the nucleus accumbens. To further understand the role of LDT-VTA inputs in reinforcement, we optogenetically manipulated these inputs during different behavioral paradigms in male rats. We found that in a two-choice instrumental task, optical activation of LDT-VTA projections shifts and amplifies preference to the laser-paired reward in comparison to an otherwise equal reward; the opposite was observed with inhibition experiments. In a progressive ratio task, LDT-VTA activation boosts motivation, that is, enhances the willingness to work to get the reward associated with LDT-VTA stimulation; and the reverse occurs when inhibiting these inputs. Animals abolished preference if the reward was omitted, suggesting that LDT-VTA stimulation adds/decreases value to the stimulation-paired reward. In addition, we show that LDT-VTA optical activation induces robust preference in the conditioned and real-time place preference tests, while optical inhibition induces aversion. The behavioral findings are supported by electrophysiological recordings and c-fos immunofluorescence correlates in downstream target regions. In LDT-VTA ChR2 animals, we observed an increase in the recruitment of lateral VTA dopamine neurons and D1 neurons from nucleus accumbens core and shell; whereas in LDT-VTA NpHR animals, D2 neurons appear to be preferentially recruited. Collectively, these data show that the LDT-VTA inputs encode positive reinforcement signals and are important for different dimensions of reward-related behaviors.
Accessibility: Document exists in file
Language:
eng
Author:
Coimbra, B.
Secondary author(s):
Domingues, A. V., Soares-Cunha, C., Correia, R., Pinto, L., Sousa, N., Rodrigues, A. J.
Document type:
Article
Number of reproductions:
1
Percentiles:
7
Reference:
Coimbra, B., Domingues, A. V., Soares-Cunha, C., Correia, R., Pinto, L., Sousa, N., & Rodrigues, A. J. (2021). Laterodorsal tegmentum-ventral tegmental area projections encode positive reinforcement signals. Journal of Neuroscience Research. https://doi.org/10.1002/jnr.24931
2-year Impact Factor: 4.433|2021
Times cited: 2|2024-02-14
Indexed document: Yes
Quartile: Q2
Keywords: LDT / Motivation / Neuronal circuits / Optogenetics / Reward

Laterodorsal tegmentum-ventral tegmental area projections encode positive reinforcement signals

Laterodorsal tegmentum-ventral tegmental area projections encode positive reinforcement signals