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Id: lil-774081
Autor: Ackerman, Diane.
Título: Uma história natural dos sentidos / A natural history of the senses.
Fonte: Rio de Janeiro; Bertrand Brasil; 1992. 366 p.
Idioma: pt.
Descritores: Sinais (Psicologia)
Órgãos dos Sentidos/fisiologia
Percepção/fisiologia
Responsável: BR73.1 - Biblioteca


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Texto completo SciELO Saúde Pública
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Id: lil-772131
Autor: Aristizábal, Dagnovar; Gallo, Jaime; Valencia, Ángela; Jaime, Juan; Correa, Mónica; Aristizábal, Alberto; Montoya, Marcela; Abad, José.
Título: Effect of a comprehensive ambulatory care model on outcomes of patients with acute coronary syndrome in Colombia / Efecto de un modelo integral de atención ambulatoria sobre los resultados en pacientes con síndrome coronario agudo en Colombia
Fonte: Rev. panam. salud pública = Pan am. j. public health;38(5):362-369, Nov. 2015. ilus, tab.
Idioma: en.
Resumo: OBJECTIVE: To evaluate the effect of a care program designed according to a comprehensive ambulatory care model (CACM) on the appearance of new cardiovascular/coronary events in patients with acute coronary syndrome. METHODS: Participants in this quasi-experimental intervention study included acute coronary syndrome patients 30-70 years old. The intervention group (n = 165) received care under the CACM, guided by an interdisciplinary team. The CACM included transitional care, risk stratification by severity, physiological profiling (impedance cardiography), and a treatment plan in accordance with current guidelines. The control group (n = 277) received conventional, recommended care in an ambulatory cardiac rehabilitation program. During one year of follow-up, the use of emergency and hospital services related to new cardiovascular and coronary events was evaluated. RESULTS: Differences in the numbers of cardiovascular events (P = 0.003) and coronary events (P = 0.006) experienced by patients were found between the control group and the intervention group. The instantaneous risk of a cardiovascular event (hazard ratio (HR) = 1.80; 95% confidence interval (CI): 1.17-2.75; P = 0.007) and of a coronary event (HR = 1.81; 95% CI: 1.13-2.90; P = 0.013), after adjusting for age, sex, smoking, and compromised coronary arteries, was higher in the control group than the intervention group. CONCLUSIONS: Provision of care under the CACM to patients who had experienced an acute coronary event reduced emergency room visits and rehospitalizations related to new cardiovascular and coronary events by 40%. The average "number needed to treat" (NNT) under the CACM to have an impact on one person (in this case, the prevention of one cardiovascular or coronary event), was 9 and 11 respectively, indicating it is cost-effective.

OBJETIVO:Evaluar el efecto de un programa de atención diseñado según un modelo integral de atención ambulatoria (MIAA) en la aparición de nuevos episodios cardiovasculares o coronarios en pacientes con síndrome coronario agudo. MÉTODOS: Como participantes en este estudio de intervención cuasiexperimental se incluyó a pacientes con síndrome coronario agudo de 30 a 70 años de edad. El grupo de intervención (n = 165) recibió atención mediante el MIAA, guiada por un equipo interdisciplinario. El MIAA incluyó la atención transitoria, la estratificación del riesgo según la gravedad, la realización de pruebas fisiológicas (cardiografía de impedancia) y un plan de tratamiento conforme con las directrices actuales. El grupo de referencia (n = 277) recibió la atención convencional recomendada en un programa ambulatorio de rehabilitación cardíaca. Durante el año en que se llevó a cabo el seguimiento, se evaluó el uso de los servicios de urgencia y hospitalarios relacionados con nuevos episodios cardiovasculares y coronarios. RESULTADOS: Se observaron diferencias en el número de episodios cardiovasculares (P = 0,003) y episodios coronarios (P = 0,006) experimentados por los pacientes del grupo de referencia y el grupo de intervención. El cociente de riesgo instantáneo de un episodio cardiovascular (HR = 1,80; IC de 95%: 1,17-2,75; P = 0,007) y de un episodio coronario (HR = 1,81; IC de 95%: 1,13-2,90; P = 0,013), tras ajustar para la edad, el sexo, el tabaquismo y las arterias coronarias afectadas, fue mayor en el grupo de referencia que en el grupo de intervención. CONCLUSIONES: La prestación de atención mediante el MIAA a los pacientes que habían experimentado un episodio coronario agudo redujo en 40% las visitas a servicios de urgencia y las rehospitalizaciones relacionadas con nuevos episodios cardiovasculares y coronarios. El número promedio de pacientes "que es necesario tratar" mediante el MIAA para que tenga repercusión en uno de ellos (en este caso, la prevención de un episodio cardiovascular o coronario), fue de 9 y 11 respectivamente, lo que indica que la intervención es eficaz en función de los costos.
Descritores: Psicologia do Esquizofrênico
Percepção Social
-Sinais (Psicologia)
Emoções
Empatia
Meio Social
Esquizofrenia/fisiopatologia
Teoria da Mente
Limites: Seres Humanos
Tipo de Publ: Revisão
Responsável: BR1.1 - BIREME


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Texto completo SciELO Costa Rica
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Id: lil-753709
Autor: Lacey, Elizabeth A.; Collado-Vides, Ligia; Fourqurean, James W..
Título: Morphological and physiological responses of seagrasses (Alismatales) to grazers (Testudines: Cheloniidae) and the role of these responses as grazing patch abandonment cues / Respuestas morfológicas y fisiológicas de los pastos marinos (Alismatales) a los herbívoros (Testudines: Cheloniidae) y el papel de estas respuestas como señales de abandono de parches de pastoreo
Fonte: Rev. biol. trop;62(4):1535-1548, oct.-dic. 2014. graf, tab.
Idioma: en.
Resumo: Green sea turtles, Chelonia mydas, are grazers influencing the distribution of seagrass within shallow coastal ecosystems, yet the drivers behind C. mydas patch use within seagrass beds are largely unknown. Current theories center on food quality (nutrient content) as the plant responds to grazing disturbances; however, no study has monitored these parameters in a natural setting without grazer manipulation. To determine the morphological and physiological responses potentially influencing seagrass recovery from grazing disturbances, seagrasses were monitored for one year under three different grazing scenarios (turtle grazed, fish grazed and ungrazed) in a tropical ecosystem in Akumal Bay, Quintana Roo, Mexico. Significantly less soluble carbohydrates and increased nitrogen and phosphorus content in Thalassia testudinum were indicative of the stresses placed on seagrasses during herbivory. To determine if these physiological responses were the drivers of the heterogeneous grazing behavior by C. mydas recorded in Akumal Bay, patches were mapped and monitored over a six-month interval. The abandoned patches had the lowest standing crop rather than leaf nutrient or rhizome soluble carbohydrate content. This suggests a modified Giving Up Density (GUD) behavior: the critical threshold where cost of continued grazing does not provide minimum nutrients, therefore, new patches must be utilized, explains resource abandonment and mechanism behind C. mydas grazing. This study is the first to apply GUD theory, often applied in terrestrial literature, to explain marine herbivore grazing behavior.

Las tortugas verdes, Chelonia mydas, son herbívoros que influencian la distribución de pastos marinos en sistemas costeros someros, sin embargo los factores que hay detrás del uso de un parche de pastos marinos por C. mydas son desconocidos. Teorías actuales se centran en calidad de alimento (contenido de nutrientes en tejido) conforme la planta responde a la alteración causada por el pastoreo; sin embargo no hay estudios que hayan monitoreado estos parámetros en un diseño natural sin manipulación del herbívoro. Para deter minar las respuestas morfológicas y fisiológicas (productividad, morfología y almacenamiento de nutrientes) que potencialmente influencian la recuperación de los pastos de la alteración por pastoreo, los pastos fueron monitoreados por un año en tres escenarios diferentes de pastoreo (pastoreo por tortuga, pastoreo por peces, sin pastoreo) en el sistema tropical Bahía de Akumal, Quintana Roo, México. Significativamente menos carbohidratos solubles y mayor contenido de nitrógeno y fósforo fueron indicativos del estrés causado por el pastoreo en los pastos. Para determinar si estas respuestas fisiológicas de los pastos son las causantes del heterogéneo comportamiento de pastoreo de C. midas, reportado en Akumal, se mapearon y monitorearon parches de pastos en intervalos de seis meses. Los parches abandonados tuvieron menor biomasa, en vez de bajo contenido de nutrientes en hoja, o de carbohidratos en raíces. Estos resultados sugieren un comportamiento modificado de renunciamiento por densidad: el umbral crítico donde el costo de pastoreo continuo no provee los nutrimentos mínimos, por lo tanto nuevos parches deberán ser utilizados, explicando así el abandono del recurso y mecanismo detrás del comportamiento de pastoreo por C. mydas. Este es el primer estudio en aplicar la teoría de renuncia por densidad, frecuentemente utilizada en la literatura terrestre, para explicar el comportamiento de pastoreo de herbívoros.
Descritores: Alismatales/anatomia & histologia
Alismatales/fisiologia
Comportamento Alimentar/fisiologia
Tartarugas/fisiologia
-Alismatales/classificação
Sinais (Psicologia)
México
Estações do Ano
Tartarugas/classificação
Limites: Animais
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: CR1.1 - BINASSS - Biblioteca Nacional de Salud y Seguridad Social


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Texto completo SciELO Brasil
Alvarenga, Marcia Regina Martins
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Id: lil-752512
Autor: Souza, Rosely Almeida; Alvarenga, Márcia Regina Martins; Amendola, Fernanda; Silva, Tharsila Martins Rios; Yamashita, Cintia Hitomi; Oliveira, Maria Amélia de Campos.
Título: Vulnerabilidade de famílias de idosos assistidos pela Estratégia Saúde da Família / Vulnerabilidad de las familias de adultos mayores asistidas por la Estrategia Salud de la Familia / Vulnerability of families of elderly citizens cared for by the Family Health Strategy
Fonte: Rev. bras. enferm;68(2):244-252, Mar-Apr/2015. tab.
Idioma: pt.
Resumo: RESUMO Objetivo: estudo descritivo, exploratório, de corte transversal, cujo objetivo foi identificar a vulnerabilidade de famílias de idosos assistidos pela Estratégia Saúde da Família (ESF). Método: foi desenvolvido por meio de entrevistas domiciliárias realizadas com uma amostra de 500 famílias de idosos assistidas por 32 equipes da ESF da cidade de Dourados, MS. O Índice de Desenvolvimento da Família (IDF) foi adaptado para classificá-las em função da situação de vulnerabilidade. Resultados: os resultados revelaram a presença de famílias multigeracionais, com baixa escolaridade entre os indivíduos com idade superior a 20 anos e alta taxa de analfabetismo entre os idosos. Identificaram-se 403 famílias em situação de vulnerabilidade aceitável, 95 em vulnerabilidade grave e duas famílias em situação de vulnerabilidade muito grave. As dimensões mais críticas do IDF foram os acessos ao conhecimento e ao trabalho. Conclusão: conclui-se que há necessidade de mais investimentos no cuidado a esses idosos e suas famílias na Atenção Básica. .

RESUMEN Objetivo: estudio descriptivo, exploratorio, transversal, con el objetivo de identificar la vulnerabilidad de familias adultos mayores asistidas por la Estrategia Salud de la Familia (ESF). Método: fue desarrollado mediante entrevistas a una muestra de 500 familias de adultos mayores bajo la responsabilidad de 32 equipos de ESF en la ciudad de Dourados, MS, Brasil. El Índice de Desarrollo de la Familia (IDF) fue adaptado para clasificar las familias de acuerdo a la situación de vulnerabilidad. Resultados: los resultados revelaron la presencia de familias multigeneracionales con bajo nivel de educación entre las personas mayores de 20 años y las altas tasas de analfabetismo entre los adultos mayores. Se identificaron 403 familias en situación de vulnerabilidad aceptable, 95 con vulnerabilidad grave y dos familias en situación de vulnerabilidad muy grave. Las dimensiones más críticas en el IDF fueron el acceso al conocimiento y al trabajo. Conclusión: se concluye que existe la necesidad de una mayor inversión, con un enfoque en la atención primaria, con el fin de atender a las personas mayores y sus familias. .

ABSTRACT Objective: the present descriptive, exploratory, cross-sectional study aimed to identify the vulnerability of families of elderly citizens cared for by the Family Health Strategy (FHS). Method: the research employed home interviews and was developed with a sample of 500 families of aged people cared for by 32 FHS teams in the city of Dourados, MS, Brazil. The Family Development Index (FDI) was adapted in order to classify the families according to their degree of vulnerability. Results: the results revealed the presence of multigenerational families with low educational levels among individuals over the age of 20 and high illiteracy rates among elderly citizens. There were 403 families whose vulnerability was acceptable, 95 in severe vulnerability, and two families in a condition of very severe vulnerability. The most critical dimensions of the FDI were the access to knowledge and to work. Conclusion: the study identifi ed that there is still a need for further investments that can assist these aged people and their families in the Primary Health Care. .
Descritores: Sensibilidades de Contraste/fisiologia
Percepção de Forma/fisiologia
Macaca mulatta/fisiologia
Córtex Visual/fisiologia
Percepção Visual/fisiologia
-Mapeamento Encefálico
Sinais (Psicologia)
Iluminação
Neurônios/citologia
Neurônios/fisiologia
Imagem Óptica
Estimulação Luminosa
Córtex Visual/anatomia & histologia
Limites: Animais
Masculino
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME


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Yamamoto, Maria Emília
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Id: lil-703101
Autor: Leitão, Monique; Guedes, Álvaro; Yamamoto, Maria Emília; Lopes, Fívia de Araújo.
Título: Do people adjust career choices according to socioeconomic conditions?: an evolutionary analysis of future discounting
Fonte: Psychol. neurosci. (Impr.);6(3):383-390, July-Dec. 2013. graf.
Idioma: en.
Resumo: The ability to process environmental cues and make advantageous choices has been fundamental during human evolution. Discounting future rewards is a capacity of our evolved mind and could be useful for understanding career decisions. This paper investigated the relationship between real-life plans, career choices, and income indicators based on an evolutionary approach of future discounting. Study 1 analyzed the plans of 200 senior high school students, and Study 2 analyzed a database of 46,649 applicants to a Brazilian public university. The results demonstrated that lower income subjects made career decisions with quicker returns and smaller investments. They included a job in immediate plans more frequently than higher income students who planned to go to a university. Analyzing the applicants' choices, higher income subjects sought courses with greater entrance difficulty. We suggest that individuals adjust career plans and choices according to their socioeconomic conditions and assume different discounting rates by considering risks of failure and future gains...
Descritores: Escolha da Profissão
Ciência Cognitiva
Fatores Socioeconômicos
-Sinais (Psicologia)
Limites: Seres Humanos
Masculino
Feminino
Adolescente
Adulto Jovem
Responsável: BR85.1 - Biblioteca Dante Moreira Leite


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Id: lil-703087
Autor: Harrison, Neil R; Davies, Simon J.
Título: Modulation of spatial attention to visual targets by emotional environmental sounds
Fonte: Psychol. neurosci. (Impr.);6(3):247-251, July-Dec. 2013. graf, tab.
Idioma: en.
Resumo: Previous research has shown that visual spatial attention can be modulated by emotional prosody cues, but it is not known whether such crossmodal modulation of visual attention is associated with the engagement or disengagement of attentional resources. To test this, we employed a modified spatial cueing task, where participants indicated whether a visual target appeared either on the left or the right, after hearing a spatially non-predictive peripheral sound. Prior studies using prosody cues have found that modulation of visual attention by emotional auditory cues was lateralized, but this may have been due to the speech content of the stimuli; here instead we used non-speech environmental sounds. The sound was either emotional (pleasant, unpleasant) or neutral, and was presented either on the same side as the visual target ('valid' trial) or on the opposite side ('invalid' trial). For the cue validity index (RT to invalid cue minus RT to valid cue), we found differences between emotional and neutral cues, but only for visual targets presented in the right hemifield; here the cue validity index was lower for unpleasant compared to neutral and pleasant cues. Absolute RTs for targets on the right were faster for invalid trials following unpleasant cues, compared to pleasant and neutral cues, indicating that the reduced cue validity effect was due to faster disengagement from unpleasant auditory cues. Further, our results show that the laterality effect is related to the emotional nature of the cues, rather than the speech content of the stimuli...
Descritores: Atenção
Sinais (Psicologia)
-Emoções
Limites: Seres Humanos
Responsável: BR85.1 - Biblioteca Dante Moreira Leite


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Texto completo SciELO Brasil
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Id: lil-625450
Autor: Araujo, Renata Brasil; Balbinot, Alexandre Didó; Castro, Maria da Graça Tanori de; Rocha, Marcelo Rossoni da; Miguel, Sandro Rene Pinto de Sousa; Cohen, Mírian; Pedroso, Rosemeri Siqueira.
Título: Tratamento de exposição a estímulos e treinamento de habilidades como coadjuvantes no manejo do craving em um dependente de crack / Cue exposure treatment and coping skills training as adjuvant therapies in the management of craving in a crack cocaine addict
Fonte: Trends psychiatry psychother. (Impr.);33(3):181-188, 2011. tab.
Idioma: pt.
Resumo: OBJETIVO: Tem-se observado um aumento da prevalência de dependentes de crack em amostras clínicas, o que torna necessária a realização de pesquisas quanto a estratégias de tratamento direcionadas a essa clientela. O objetivo deste estudo foi descrever o caso de um dependente de crack internado no qual foram utilizados o tratamento de exposição a estímulos (TEE) e o treinamento de habilidades (TH) como coadjuvantes ao tratamento tradicional. DESCRIÇÃO DO CASO: O paciente é do sexo masculino, 29 anos de idade, solteiro, ensino médio completo. Era dependente de crack e de maconha e fazia uso nocivo de álcool. O paciente já estava internado havia 2 semanas e tinha passado por um protocolo de quatro sessões com entrevista motivacional e prevenção à recaída. Foram feitas seis sessões, ao longo de 2 semanas, de TEE e TH, nas quais o paciente foi exposto in vivo e pela imaginação a estímulos evocadores de fissura, como cachimbo de crack, isqueiro, pedras simuladas, lembranças de locais e amigos associados ao uso da droga. Ele também foi treinado para utilizar estratégias de manejo da fissura. Após 3 meses da alta hospitalar, foi realizado screening toxicológico para avaliar a manutenção de abstinência. O paciente avaliou o uso das técnicas como importante para a manutenção da abstinência após 3 meses da alta e para sua baixa média de fissura pelo crack. COMENTÁRIOS: Talvez o TEE e o TH para manejo da fissura possam ser úteis como coadjuvantes no tratamento de dependentes de crack. Tal uso deve ser avaliado em ensaios clínicos para demonstrar seu real benefício (AU)

OBJECTIVE: An increased prevalence of crack cocaine users has been observed in clinical samples over the past years, underscoring the need for conducting research and developing treatment strategies aimed at this population. The objective of this study was to describe the case of a crack cocaine addict (inpatient) submitted to cue exposure treatment (CET) and coping skills training (CS) as adjuvant approaches to the conventional addiction treatment. CASE DESCRIPTION: A male patient, 29 years old, single, with complete high school, was dependent on crack cocaine and marijuana and also had a diagnosis of harmful alcohol use. The patient had been hospitalized for 2 weeks and had undertaken a protocol comprising four motivational interview and relapse prevention sessions. Six sessions of CET and CS were carried out over 2 weeks, including both in vivo and imaginal exposure to stimuli evoking craving for crack cocaine, such as a crack pipe, a lighter, and simulated crack cocaine rocks (in vivo exposure), or remembering places and friends associated with drug use (imaginal exposure). The patient was also trained to use strategies for the management of craving. Three months after hospital discharge, toxicological screening was performed to assess abstinence. CET and CS were considered by the patient to be important techniques for the maintenance of abstinence and of a low level of craving 3 months after discharge. COMMENTS: These findings suggest that the two techniques may be useful as adjuvant therapies in the treatment of crack cocaine dependents. CET and CS should be assessed in clinical trials in order to demonstrate their real benefits (AU)
Descritores: Transtornos Relacionados ao Uso de Cocaína/terapia
Cocaína Crack
Fissura
Terapia Implosiva
-Adaptação Psicológica
Transtornos Relacionados ao Uso de Cocaína/psicologia
Sinais (Psicologia)
Limites: Seres Humanos
Masculino
Adulto
Tipo de Publ: Relatos de Casos
Responsável: BR1.1 - BIREME


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Texto completo SciELO Brasil
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Id: lil-622767
Autor: Alouche, S.R.; Sant’Anna, G.N.; Biagioni, G.; Ribeiro-do-Valle, L.E..
Título: Influence of cueing on the preparation and execution of untrained and trained complex motor responses
Fonte: Braz. j. med. biol. res = Rev. bras. pesqui. méd. biol;45(5):425-435, May 2012. ilus.
Idioma: en.
Resumo: This study investigated the influence of cueing on the performance of untrained and trained complex motor responses. Healthy adults responded to a visual target by performing four sequential movements (complex response) or a single movement (simple response) of their middle finger. A visual cue preceded the target by an interval of 300, 1000, or 2000 ms. In Experiment 1, the complex and simple responses were not previously trained. During the testing session, the complex response pattern varied on a trial-by-trial basis following the indication provided by the visual cue. In Experiment 2, the complex response and the simple response were extensively trained beforehand. During the testing session, the trained complex response pattern was performed in all trials. The latency of the untrained and trained complex responses decreased from the short to the medium and long cue-target intervals. The latency of the complex response was longer than that of the simple response, except in the case of the trained responses and the long cue-target interval. These results suggest that the preparation of untrained complex responses cannot be completed in advance, this being possible, however, for trained complex responses when enough time is available. The duration of the 1st submovement, 1st pause and 2nd submovement of the untrained and the trained complex responses increased from the short to the long cue-target interval, suggesting that there is an increase of online programming of the response possibly related to the degree of certainty about the moment of target appearance.
Descritores: Sinais (Psicologia)
Condicionamento (Psicologia)/fisiologia
Movimento/fisiologia
Estimulação Luminosa/métodos
Tempo de Reação/fisiologia
Limites: Adolescente
Adulto
Feminino
Seres Humanos
Masculino
Adulto Jovem
Tipo de Publ: Research Support, Non-U.S. Gov't
Responsável: BR1.1 - BIREME


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Id: lil-571872
Autor: García, Andrés; Benjumea Rodríguez, Santiago.
Título: Facilitación de relaciones bidireccionales en palomas usando una tarea de transferencia tras entrenamiento en discriminación de la propia conducta / Facilitation of bi-directional relationships in pigeons using a transfer task after training in discrimination of own behavior
Fonte: Univ. psychol;6(2):441-450, mayo.-ago. 2007. graf.
Idioma: es.
Resumo: Se llevó a cabo un experimento en el que diez palomas fueron entrenadas en una tarea de discriminación condicional de su propia conducta. Los sujetos aprendían que cuando la muestra había consistido en responder a la izquierda (derecha) ante dos teclas blancas, debían elegir la comparación roja (verde) para ser reforzados. Una vez que los animales habían aprendido esta tarea, se les pasaba a una fase de prueba. En concreto, cinco palomas fueron entrenadas en una transferencia positiva, ya que si la muestra era ahora la tecla roja (verde) tenían que elegir la comparación izquierda (derecha) para llegar al reforzador. Por el contrario, las otras cinco palomas recibían un entrenamiento de transferencia negativa, ya que la tarea consistía en que ante una muestra roja (verde) debían elegir la comparación derecha (izquierda) para ser reforzados. Los datos obtenidos indican que la ejecución de los sujetos del grupo en el que había coherencia entre las fases fue superior a la de los sujetos del grupo en el que no había dicha coherencia. Los resultados son interpretados en relación con la importancia que la discriminación de la propia conducta tiene en la derivación de relaciones bidireccionales.

An experiment was carried out in which 10 pigeons were trained in a task of conditional discrimination of their ownbehavior. The birds learned that when the sample had consisted on responding to the left (right) with two white keys,they should choose the red (green) comparison to be reinforced. Once the animals had learned this task, they werepassed to a test phase. In short, 5 pigeons were trained in a positive transfer, where the sample was now the red (green) key they had to choose the left (right) comparison to obtain the reinforcer. On the contrary, the other 5 pigeons received a training of negative transfer, where the task consisted in that with a red (green) sample they should choose the right (left) comparison to be reinforced. The obtained data indicate that the performance of those subjects of the group in which there was coherence among the phases went superior to that of those subjects of the group where there was not this coherence. The results are interpreted in connection with the importance that the discrimination of the own behavior has in the derivation of bidirectional relationships.
Descritores: Experimentação Animal
-Condicionamento Operante
Sinais (Psicologia)
Reforço (Psicologia)
Limites: Animais
Responsável: CO185.1 - Biblioteca Alfonso Borrero Cabal, S. J.


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Id: lil-571871
Autor: Ortiz, René; Flores, Carlos.
Título: Efectos de variar la posición temporal del estímulo intrusivo durante el intervalo de demora y de la consistencia e inconsistencia de la relación muestra-reforzador / Effects of varying the temporary position of the intruded stimulus during the delay interval and of the consistency and inconsistency of the sample-reinforcer relationship
Fonte: Univ. psychol;6(2):451-463, mayo.-ago. 2007. graf.
Idioma: es.
Resumo: El propósito del presente estudio fue evaluar el efecto de variar la posición temporal de estímulos intrusivos durante el intervalo de demora, y de la consistencia e inconsistencia en la relación muestra-reforzador en una tarea de igualación de la muestra demorada. Para tres palomas, el estímulo intrusivo mantuvo una relación consistente con la relación muestra-reforzador, mientras que para otras tres, el estímulo intrusivo mantuvo una relación inconsistente con la que guardaban el estímulo muestra y el reforzador. En ambos grupos se varió la posición del estímulo intrusivo durante la demora (inicio, mitad y final). Se encontró que el índice de discriminación fue más bajo en la posición final y mitad en ambos grupos. Los resultados se discuten en términos de la relación que tienen las variables temporales sobre las diferentes propiedades que desarrollan los estímulos.

The present study evaluated the effect of varying the temporary position of intruded stimuli during the delay intervaland the consistency and inconsistency in the relationship sample-reinforcer in a delayed matching to sample task. Forthree pigeons the intruded stimulus maintained a consistent relationship with the sample-reinforcer relationship,while for other three pigeons the intruded stimulus maintained a inconsistent relationship with the sample stimulusreinforcer correlation. In both groups the position of the intruded stimulus was varied during the delay (begin, half and final). The discrimination index was lower in the final and half position in both groups. The results are discussed in terms of the relationship that have the temporary variables about the different properties that develop the stimuli.
Descritores: Reforço (Psicologia)
-Experimentação Animal
Condicionamento Operante
Sinais (Psicologia)
Limites: Animais
Responsável: CO185.1 - Biblioteca Alfonso Borrero Cabal, S. J.



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