Results 31 to 40 of about 21,053 (305)

Repeated elicitation of the acoustic startle reflex leads to sensitisation in subsequent avoidance behaviour and induces fear conditioning

open access: yesBMC Neuroscience, 2011
Background Autonomous reflexes enable animals to respond quickly to potential threats, prevent injury and mediate fight or flight responses. Intense acoustic stimuli with sudden onsets elicit a startle reflex while stimuli of similar intensity but with ...
Janik Vincent M, Götz Thomas
doaj   +1 more source

Hypnotizability, hypnosis and prepulse inhibition of the startle reflex in healthy women: an ERP analysis. [PDF]

open access: yesPLoS ONE, 2013
A working model of the neurophysiology of hypnosis suggests that highly hypnotizable individuals (HHs) have more effective frontal attentional systems implementing control, monitoring performance, and inhibiting unwanted stimuli from conscious awareness,
Vilfredo De Pascalis, Emanuela Russo
doaj   +1 more source

Effect of stress and attention on startle response and prepulse inhibition [PDF]

open access: yes, 2016
The startle reflex magnitude can be modulated when a weak stimulus is presented before the onset of the startle stimulus, a phenomenon termed prepulse inhibition (PPI).
Casa Rivas, Luis Gonzalo de La   +2 more
core   +1 more source

Pdxdc1 modulates prepulse inhibition of acoustic startle in the mouse. [PDF]

open access: yes, 2017
Current antipsychotic medications used to treat schizophrenia all target the dopamine D2 receptor. Although these drugs have serious side effects and limited efficacy, no novel molecular targets for schizophrenia treatment have been successfully ...
Boutros, PC   +5 more
core   +1 more source

Habituation of the startle reflex depends on attention in cannabis users

open access: yesBMC Psychology, 2016
Background Cannabis use is associated with an attention-dependent deficit in prepulse inhibition of the startle reflex (PPI). The aim of the current study was to investigate startle habituation in cannabis users and healthy controls during two ...
Karina K. Kedzior   +2 more
doaj   +1 more source

Startle response and prepulse inhibition modulation by positive- and negative-induced affect [PDF]

open access: yes, 2014
The startle response, a set of reflex behaviours intended to prepare the organism to face a potentially threatening stimulus, can be modulated by several factors as, for example, changes in affective state, or previous presentation of a weak stimulus ...
Casa Rivas, Luis Gonzalo de La   +2 more
core   +1 more source

Prepontine non-giant neurons drive flexible escape behavior in zebrafish [PDF]

open access: yes, 2019
Many species execute ballistic escape reactions to avoid imminent danger. Despite fast reaction times, responses are often highly regulated, reflecting a trade-off between costly motor actions and perceived threat level.
Bergeron, S.   +4 more
core   +2 more sources

Interactions between stretch and startle reflexes produce task-appropriate rapid postural reactions

open access: yesFrontiers in Integrative Neuroscience, 2015
Neural pathways underpinning startle reflex and limb stretch reflexes evolved independently and have served vastly different purposes. In their most basic form, the pathways responsible for these reflex responses are relatively simple processing units ...
Jonathan eShemmell
doaj   +1 more source

The influence of affective factors on time perception [PDF]

open access: yes, 1997
Several studies have suggested that both affective valence and arousal affect the perception of time. How-ever, in previous experiments these two affective dimensions were not systematically controlled.
Angrilli, Alessandro   +3 more
core   +1 more source

THE HYPEREKPLEXIAS AND THEIR RELATIONSHIP TO THE NORMAL STARTLE REFLEX

open access: yesBrain, 1991
The startle response to unexpected auditory and somaesthetic stimulation was studied in 8 patients with hereditary or symptomatic hyperekplexia. It was abnormal in its resistance to habituation and in its exaggerated motor response. Both noise and taps to the face and head elicited a normal early blink response, separate from the subsequent true ...
Brown, P   +5 more
openaire   +2 more sources

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