The tonic immobility (TI) response is an innate fear behavior associated with intensely
dangerous situations, exhibited by many species of invertebrate and vertebrate animals. In …

The neural mechanisms involved in post-ictal analgesia remain to be elucidated.
Pentylenetetrazol (PTZ) is used experimentally to induce seizure in animal subjects. This …

Neurons in the medullary reticular formation (MRF; nucleus reticularis gigantocellularis and
nucleus reticularis paragigantocellularis) were evaluated for their involvement in the …

The effect of iontophoretically applied 5-hydroxytryptamine on neurones in nucleus raphe
magnus, and the effect of microinjection of 5-hydroxytryptamine into nucleus raphe magnus …

It has been established that chemical stimulation of the inferior colliculus (IC) of laboratory
animals evokes fear-related defensive responses, which are considered panic attack-like …

Tonic immobility (TI), also known as death feigning or animal hypnosis, is a reversible state
of motor inhibition that is triggered by postural inversion and/or movement restraining …

Rats with lesions in the median raphe nucleus (MR group) or in both the dorsal and median
raphe nuclei (R group) were compared with operated control animals on the following …

The midbrain tectum structures, dorsal periaqueductal gray (dPAG) and inferior colliculus
(IC), are involved in the organization of fear and anxiety states during the exposure to …

Ventrolateral periaqueductal gray (VL-PAG) contains key neuronal circuits related to the
analgesic effect involved in integrated defensive behaviors such as immobility response …

Tonic immobility (TI) is an inborn defensive behavior characterized by a temporary state of
profound and reversible motor inhibition elicited by some forms of physical restraint. It is …