Concept

Fear

Related publications (70)

Scripting the swarm: event-based control of microcontroller-based robots.

Francesco Mondada, Stéphane Magnenat, Philippe Rétornaz, Basilio Noris

Swarm robotics in real world requires a large number of robots and thus enough room for experimentation. Therefore, to implement such experiments with limited budget, robots should be compact and low cost, which entails the use of microcontroller-based min ...

2008

Amygdala upregulation of NCAM polysialylation induced by auditory fear conditioning is not required for memory formation, but plays a role in fear extinction

Maria del Carmen Sandi Perez, Kamila Markram

There is much interest to understand the mechanisms leading to the establishment, maintenance, and extinction of fear memories. The amygdala has been critically involved in the processing of fear memories and a number of molecular changes have been implica ...

2007

Stress before puberty exerts a sex- and age-related impact on auditory and contextual fear conditioning in the rat

Maria del Carmen Sandi Perez

Adolescence is a period of major physical, hormonal, and psychological changes. It is also characterized by a significant increase in the incidence of psychopathologies and this increase is gender-specific. Stress during adolescence is associated with the ...

2007

Upregulation of polysialylated neural cell adhesion molecule in the dorsal hippocampus after contextual fear conditioning is involved in long-term memory formation

Maria del Carmen Sandi Perez

The role of the hippocampus in pavlovian fear conditioning is controversial. Although lesion and pharmacological inactivation studies have suggested a key role for the dorsal hippocampus in contextual fear conditioning, the involvement of the ventral part ...

2007

Selective learning and memory impairments in mice deficient for polysialylated NCAM in adulthood

Maria del Carmen Sandi Perez, Kamila Markram

The neural cell adhesion molecule (NCAM) has been implicated in regulating synaptic plasticity mechanisms as well as memory consolidation processes. Attachment of polysialic acid to NCAM (PSA-NCAM) has been reported to down-regulate its adhesive forces, a ...

2007

Virtual reality exposure therapy for social phobia

Bruno Herbelin

This thesis presents researches and experiments performed in collaboration with a psychiatrist in order to validate and improve the use of virtual reality in social phobia psychotherapy. Cognitive and behavioral therapies are strongly based on the exposure ...

EPFL2005

Acute stress-induced impairment of spatial memory is associated with decreased expression of neural cell adhesion molecule in the hippocampus and prefrontal cortex

Maria del Carmen Sandi Perez

BACKGROUND: There is an extensive literature describing how stress disturbs cognitive processing and can exacerbate psychiatric disorders. There is, however, an insufficient understanding of the molecular mechanisms involved in stress effects on brain and ...

2005

Chronic restraint stress down-regulates amygdaloid expression of polysialylated neural cell adhesion molecule

Maria del Carmen Sandi Perez, Maria Isabel Cordero Campana

The amygdala is a brain area which plays a decisive role in fear and anxiety. Since exposure to chronic stress can induce profound effects in emotion and cognition, plasticity in specific amygdaloid nuclei in response to prior stress has been hypothesized ...

2005

Prior exposure to a single stress session facilitates subsequent contextual fear conditioning in rats. Evidence for a role of corticosterone

Maria del Carmen Sandi Perez, Maria Isabel Cordero Campana

Previous studies showed that exposure of rats to chronic restraint stress for 21 days enhances subsequent contextual fear conditioning. Since recent evidence suggest that this effect is not dependent on stress-induced neurodegenerative processes, but to el ...

2003

Modulation of contextual fear conditioning by chronic stress in rats is related to individual differences in behavioral reactivity to novelty

Maria del Carmen Sandi Perez, Maria Isabel Cordero Campana

We investigated whether contextual fear conditioning could be related to the behavioral trait of locomotor reactivity to novelty in undisturbed and chronically stressed rats. Fear conditioning was found to be specifically enhanced in low reactive-stressed ...

2003

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