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26 results on '"Vasconcelos, Maria Luísa"'

15. As literaturas contemporâneas espanhola e portuguesa como espaços culturais de memória histórico-política

Author

Vasconcelos, Maria Luísa Pimentel

Subjects
History, Democratic Transition, Comparative Literature, História, Political Regime, Literatura comparada, Historical Process, Regime político, Processo histórico, Literature, Memory, Literatura, Memória, Transição democrática
Abstract

Nesta dissertação analisamos a forma como quatro obras literárias contemporâneas se podem constituir como espaço cultural de memória histórico-política das décadas que em Portugal e Espanha se seguiram à implantação dos regimes democráticos. O trabalho incide na análise de Os Memoráveis, de Lídia Jorge, Novembro, de Jaime Nogueira Pinto, Las leyes de la frontera, de Javier Cercas, e Romanticismo, de Manuel Longares. Procede-se à análise comparativa dos quatro romances e à forma como cada um problematiza dois períodos fundamentais da história recente dos dois países. São também tratadas as questões relacionadas com o diálogo entre o conhecimento histórico e literário, o lado fictício e imaginário da história e a contribuição da memória para a reconstrução dos processos históricos. Procura-se também entender de que forma a literatura se constitui como uma forma de reflexão catártica e crítica, como suscita a problematização do momento presente, e que marcas pessoais e/ou autobiográficas os autores deixam transparecer nas suas obras.

Published
2015

16. Avoidance response to CO2 in the lateral horn.

Author

Varela, Nélia, Gaspar, Miguel, Dias, Sophie, and Vasconcelos, Maria Luísa

Subjects
ANTENNA arrays, MUSHROOMS, OLFACTORY bulb, CALCIUM, NEURONS
Abstract

In flies, the olfactory information is carried from the first relay in the brain, the antennal lobe, to the mushroom body (MB) and the lateral horn (LH). Olfactory associations are formed in the MB. The LH was ascribed a role in innate responses based on the stereotyped connectivity with the antennal lobe, stereotyped physiological responses to odors, and MB silencing experiments. Direct evidence for the functional role of the LH is still missing. Here, we investigate the behavioral role of the LH neurons (LHNs) directly, using the CO2 response as a paradigm. Our results show the involvement of the LH in innate responses. Specifically, we demonstrate that activity in two sets of neurons is required for the full behavioral response to CO2. Tests of the behavioral response to other odors indicate the neurons are selective to CO2 response. Using calcium imaging, we observe that the two sets of neurons respond to CO2 in a different manner. Using independent manipulation and recording of the two sets of neurons, we find that the one that projects to the superior intermediate protocerebrum (SIP) also outputs to the local neurons within the LH. The design of simultaneous output at the LH and the SIP, an output of the MB, allows for coordination between innate and learned responses. [ABSTRACT FROM AUTHOR]

Published
2019
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18. Dificuldades de aprendizagem na aquisição da leitura: um estudo de caso

Author

Vasconcelos, Maria Luísa Coelho de and Santos, Miguel Augusto Meneses da Silva

Subjects
Dyslexia, Ciências Sociais::Ciências da Educação [Domínio/Área Científica], Reading, Leitura, Disléxia, Reading acquisition difficulties, Método multissensorial, Dificuldades na aquisição da leitura, Multisensory method
Abstract

Submitted by Olga Ferreira (olgaferreira@ese.ipp.pt) on 2016-12-19T17:59:20Z No. of bitstreams: 1 DM_MariaVasconcelos_2013.pdf: 3155768 bytes, checksum: c50fab3ce48352924729004ec3f14631 (MD5) Made available in DSpace on 2016-12-19T17:59:20Z (GMT). No. of bitstreams: 1 DM_MariaVasconcelos_2013.pdf: 3155768 bytes, checksum: c50fab3ce48352924729004ec3f14631 (MD5) Previous issue date: 2013

Published
2013

19. Terrorismo político: 9-11 e a procura do princípio gerador

Author

Vasconcelos, Maria Luísa

Abstract

Submitted by csousa (csousa@ufp.pt) on 2008-07-21T14:27:59Z No. of bitstreams: 1 217-224FCHS2004-8.pdf: 483155 bytes, checksum: ae7abaacb809a7c236f958274a292d91 (MD5) Made available in DSpace on 2008-07-21T14:28:06Z (GMT). No. of bitstreams: 1 217-224FCHS2004-8.pdf: 483155 bytes, checksum: ae7abaacb809a7c236f958274a292d91 (MD5) Previous issue date: 2004 Made available in DSpace on 2011-10-06T14:50:26Z (GMT). No. of bitstreams: 2 license.txt: 1861 bytes, checksum: 3a14b9ad54d72cfb620a1d2259635181 (MD5) 217-224FCHS2004-8.pdf: 483155 bytes, checksum: ae7abaacb809a7c236f958274a292d91 (MD5) Previous issue date: 2004

Published
2004

21. Neuronal control of suppression, initiation and completion of egg deposition in Drosophila melanogaster

Author

Ferreira, Cristina Maria Oliveira and Vasconcelos, Maria Luísa

Subjects
Ciências Naturais [Domínio/Área Científica], Drosophila females, behaviour
Abstract

"Egg-laying behaviour is a central aspect of insect´s reproductive biology with a profound impact on species fitness and survival. Like most insect´s species, Drosophila females evolved to invest their energy on the production of many offspring over providing maternal care."

Published
2022

22. Essential Role of the Mushroom Body in Context-Dependent CO2 Avoidance in Drosophila.

Author

Bräcker, Lasse?B., Siju, K.P., Varela, Nélia, Aso, Yoshinori, Zhang, Mo, Hein, Irina, Vasconcelos, Maria?Luísa, and Grunwald?Kadow, Ilona?C.

Subjects
*MUSHROOMS, *DROSOPHILA physiology, *CARBON dioxide reduction, *BIOLOGY, *INSECT behavior, *STARVATION
Abstract

Summary: Internal state as well as environmental conditions influence choice behavior. The neural circuits underpinning state-dependent behavior remain largely unknown. Carbon dioxide (CO2) is an important olfactory cue for many insects, including mosquitoes, flies, moths, and honeybees [1]. Concentrations of CO2 higher than 0.02% above atmospheric level trigger a strong innate avoidance in the fly Drosophila melanogaster [2, 3]. Here, we show that the mushroom body (MB), a brain center essential for olfactory associative memories [4–6] but thought to be dispensable for innate odor processing [7], is essential for CO2 avoidance behavior only in the context of starvation or in the context of a food-related odor. Consistent with this, CO2 stimulation elicits Ca2+ influx into the MB intrinsic cells (Kenyon cells: KCs) in vivo. We identify an atypical projection neuron (bilateral ventral projection neuron, biVPN) that connects CO2 sensory input bilaterally to the MB calyx. Blocking synaptic output of the biVPN completely abolishes CO2 avoidance in food-deprived flies, but not in fed flies. These findings show that two alternative neural pathways control innate choice behavior, and they are dependent on the animal’s internal state. In addition, they suggest that, during innate choice behavior, the MB serves as an integration site for internal state and olfactory input. [ABSTRACT FROM AUTHOR]

Published
2013
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23. The role of ovipositor extrusion during courtship in female Drosophila melanogaster

Author

Brotas, Margarida Caldeira, Vasconcelos, Maria Luísa, and Sucena, José Élio da Silva

Subjects
Drosophila melanogaster, Teses de mestrado - 2018, Extrusão do ovipositor, Departamento de Biologia Animal, Corte, Genética
Abstract

Tese de mestrado, Biologia Evolutiva e do Desenvolvimento, Universidade de Lisboa, Faculdade de Ciências, 2018 Submitted by Teresa Boa (tdboa@fc.ul.pt) on 2019-03-01T15:24:10Z No. of bitstreams: 1 ulfc124872_tm_Margarida_Brotas.pdf: 2223951 bytes, checksum: 089471d0a2babecf03bc1eddf85fba17 (MD5) Made available in DSpace on 2019-03-01T15:24:20Z (GMT). No. of bitstreams: 1 ulfc124872_tm_Margarida_Brotas.pdf: 2223951 bytes, checksum: 089471d0a2babecf03bc1eddf85fba17 (MD5) Previous issue date: 2018

Published
2018

24. Characterization of mating behaviour of the female fruit fly using machine vision

Author

Silva, Teresa Margarida Figueiredo, Vasconcelos, Maria Luísa, and Aranha, Márcia

Subjects
Mating, Drosophila melanogaster, Female receptivity behaviour, fungi, behavior and behavior mechanisms, Courtship, Engenharia e Tecnologia::Engenharia Médica [Domínio/Área Científica], reproductive and urinary physiology
Abstract

Courtship behaviour is the means for the animals to select their partner for reproduction. The fruit fly, Drosophila melanogaster, exhibit a complex courtship behaviour. Nearly all studies of D. melanogaster courtship have focused exclusively on the male behaviour. Female pre-copulatory behaviour is often relegated to ‘accepting’ or ‘rejecting’ of mating, and how females interact with males remains largely unknown. The aim of this study is to quantify and describe the mating behaviour of the female D. melanogaster. D. melanogaster is a model system that offers many genetic tools and when coupled with the recent technologies for neuronal manipulation, mapping and behavioural characterization, it has the potential to reveal the neurons involved in a particular behaviour. We analyzed the behaviour of the wild-type (WT) female fly by collecting information of the flies’ position during courtship using a tracking system and by automatically detecting specific behaviours using an automatic classifier. We found that WT flies displayed courtship acts and mating responses differently depending on their geographical origin strains. The automatic classes were developed in a machine learning system, to allow a faster and reliable behavioural analysis. In future work, the automatic classes developed in this research will be key to continue the female behaviour characterization.

Published
2016

25. Investigation of Novel Circuits Involved in Virgin Female Receptivity of Drosophila melanogaster

Author

Herrmann, Dennis and Vasconcelos, Maria Luísa

Subjects
animal structures, fungi, behavior and behavior mechanisms, Biology, reproductive and urinary physiology, psychological phenomena and processes, Neuroscience
Abstract

Courtship is a behavior that allows the display of fitness of one sex to the other and gates possible subsequent mating. This behavior is crucial for reproduction and has strong innate components in all animals. Courtship in Drosophila melanogaster consists of a series of highly stereotyped actions that the male performs towards the female. He sings with vibrations of the wings, touches and licks her abdomen, while she evaluates the information presented to her.(...)

Published
2015

26. Different behaviours elicited by CO2 in fruit fly larvae

Author

Martins, Nuno Pimpão Santos, 1987, Vasconcelos, Maria Luísa, and Sucena, Élio

Subjects
Drosophila melanogaster, CO2, Teses de mestrado - 2010, Fisiologia animal
Abstract

Tese de mestrado. Biologia (Biologia Evolutiva e do Desenvolvimento). Universidade de Lisboa, Faculdade de Ciências, 2010 Submitted by Lurdes Saramago (lurdes.saramago@fc.ul.pt) on 2011-01-13T17:43:10Z No. of bitstreams: 1 ulfc090543_tm_Nuno_Martins.pdf: 532048 bytes, checksum: 0fa934e664222eedc6f92639bb530a29 (MD5) Made available in DSpace on 2011-01-13T17:43:52Z (GMT). No. of bitstreams: 1 ulfc090543_tm_Nuno_Martins.pdf: 532048 bytes, checksum: 0fa934e664222eedc6f92639bb530a29 (MD5) Previous issue date: 2010

Published
2010

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