Conditioned Freezing
Mostrando 1-12 de 34 artigos, teses e dissertações.
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1. Limit growth of ice crystals under different temperature oscillations levels in nile Tilapia
Abstract The degenerative effect of temperature fluctuations during storage time is a critical condition that needs to be quantitatively characterized in products where drip losses are appreciable. In this work, real storage conditions were reproduced using freezers modified to cause 3 levels of temperature fluctuation (± 0, ± 3, ± 5; ± 7) during storage
Food Sci. Technol. Publicado em: 20/03/2017
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2. Heat transfer analyses using computational fluid dynamics in the air blast freezing of guava pulp in large containers
Heat transfer during the freezing of guava pulp conditioned in large containers such as in stacked boxes (34 L) and buckets (20 L) and unstacked drums (200 L) is discussed. The air velocities across the cross-section of the tunnel were measured, and the values in the outlet of the evaporator were used as the initial conditions in computational fluid dynamics
Braz. J. Chem. Eng.. Publicado em: 2013-12
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3. Envolvimento de mecanismos glutamatérgicos da substância cinzenta periaquedutal dorsal e do hipotálamo medial no medo condicionado à luz / Involvement of glutamatergic mechanisms of the dorsal periaqueductal gray matter and medial hypothalamus in conditioned fear to the light
A substância cinzenta periaquedutal dorsal (dPAG) e o hipotálamo medial (MH) são duas estruturas encefálicas que estão envolvidas na elaboração de estados aversivos e expressão de respostas defensivas. A estimulação elétrica da dPAG ou do MH produz uma série de respostas comportamentais que se assemelham às respostas defensivas induzidas pela pr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/09/2012
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4. ROLE OF DORSAL AND VENTRAL HIPPOCAMPUS ON CONDITIONED AND UNCONDITIONED FEAR ELICITED BY DORSAL PERIAQUEDUCTAL GREY MATTER ELECTRICAL STIMULATION IN RATS / PARTICIPAÇÃO DO HIPOCAMPO DORSAL E VENTRAL NAS REAÇÕES DE DEFESA PRODUZIDAS PELO CONDICIONAMENTO CONTEXTUAL DE MEDO E PELA ESTIMULAÇÃO ELÉTRICA DA MATÉRIA CINZENTA PERIAQUEDUTAL DORSAL
This study investigates the role of the hippocampus in both unconditioned and conditioned defense behavior by examining the effects of pre-training electrolytic lesions to the dorsal and ventral hippocampus in male rats exposed to two types of threat stimuli: electrical stimulation of the DPAG and footshock. Our results indicate that ventral and dorsal lesio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2012
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5. Gabaergic mechanisms of anterior and ventromedial hypothalamic nuclei in the expression of freezing in response to a light-conditioned stimulus
The amygdala, dorsal periaqueductal gray (dPAG), and medial hypothalamus have long been recognized to comprise a neural system responsible for the generation and elaboration of unconditioned fear in the brain. This neural substrate is well known to be under tonic inhibitory control exerted by γ-aminobutyric acid (GABA) mechanisms. Some evidence also suggest
Psychology & Neuroscience. Publicado em: 2011
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6. Panic-like behaviors in Carioca High-and Low-conditioned Freezing rats
Panic disorder involves both recurrent unexpected panic attacks and persistent concern about having additional attacks. Electrical stimulation of the dorsal periaqueductal gray (dPAG) is an animal model of both panic attack and panic disorder, whereas contextual fear conditioning represents a model of anticipatory anxiety. Previous research indicated that an
Psychology & Neuroscience. Publicado em: 2011
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7. Involvement of dopaminergic receptors of ventral tegmental area and basolateral amygdala in the acquisition and expression of conditioned fear / Envolvimento de receptores dopaminérgicos da área tegmental ventral e do complexo basolateral da amígdala na aquisição e na expressão do medo condicionado
OLIVEIRA, A.R. Envolvimento de receptores dopaminérgicos da área tegmental ventral e do complexo basolateral da amígdala na aquisição e na expressão do medo condicionado. 2010. 93 f. Tese (Doutorado) Faculdade de Filosofia, Ciências e Letras de Ribeirão Preto, Universidade de São Paulo. O condicionamento Pavloviano é um dos paradigmas mais utilizad
Publicado em: 2010
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8. Efeito da Adição de Dimetilformamida ao Diluente ACP-106 C Sobre as Características do Sêmen Canino Congelado. / Effect of Adding Dimethylformamide the ACP-106 C Diluent About Featured Canine Frozen Semen.
Several studies have been developed in the intention of already improving the protocols existent for the freezing of canine semen. With that the present work had two objectives: 1) to evaluate the effect of the addition of different dimethylformamide concentrations on the characteristics of the canine semen diluted in coconut water in the powder form (ACP-10
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 09/12/2009
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9. Strain and sex differences in fear conditioning: 22 kHz ultrasonic vocalizations and freezing in rats
Strain and sex differences in fear conditioning were investigated in two commonly used laboratory rats: Sprague Dawleys and Long-Evans. Twenty-two kHz ultrasonic vocalization (USV) distress calls and freezing behavior were used to measure fear responses to contextual and auditory conditioned stimuli (CSs), which were previously paired with a footshock uncond
Psychology & Neuroscience. Publicado em: 2009-12
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10. Organização temporal em processos de condicionamento classico aversivo e na expressão da proteina Zenk no hipocampo de pombos (C. livia) / Temporal organization of classical aversive conditioning processes and expression of Zenk protein in the hippocampus of pigeons (C. livia)
Part of the knowledge about the mechanisms and neural basis of learning, memory and amnesia is based on the investigation of neural correlates of the behavior of non human animals in aversive situations. Moreover, many studies suggest that these behavioral processes are affected by the circadian timing system. The procedures of classical aversive conditionin
Publicado em: 2009
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11. Efeito do pentilenotetrazol e do midazolam na aquisição e na expressão da resposta defensiva de ratos submetidos ao condicionamento olfatório de medo
Pavlovian fear conditioning or first-order fear conditioning has been widely used to study the neuroanatomical, cellular and molecular basis of fear. This paradigm occurs when an emotionally neutral stimulus is presented in conjunction with an aversive unconditioned stimulus (US). After one or several pairings the stimulus, previously neutral, acquires the a
Publicado em: 2009
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12. Mecanismos dopaminérgicos na aquisição e expressão do medo condicionado: envolvimento de receptores D1 e D2 / Dopaminergic mechanisms in the acquisition and expression of conditioned fear: involviment of D1 and D2 receptors
The increase in the startle reflex in the presence of a stimulus that has been previously paired to footshock is taken as an index of fear and named fear potentiated startle (FPS). Freezing behavior, a cessation of all observable movements, except those associated with respiration, has also been used as an index of fear in rats. A growing body of evidence ha
Publicado em: 2006