Personality correlates of startle habituation.

Psychopathic traits predict startle habituation but not modulation in an emotional faces task

The psychophysiological correlates of psychopathic traits in normal-range samples have been a topic of recent interest in studies of the biological basis of personality. It is well established that psychopaths demonstrate abnormal patterns of startle potentiation while viewing emotionally evocative pictures, but this effect has not been demonstrated using pictures of facial affect. Recent resea...

Personality Correlates of Startle Habituation: An Examination in Three Separate Samples BY MIRANDA NELSON

The startle reflex in schizophrenia: habituation and personality correlates.

Schizophrenia has long been associated with abnormal patterns of arousal that are thought to reflect disturbances in the reticular-activating system of the brain. Psychophysiological investigations of sensory responsivity have repeatedly demonstrated reduced reactivity and habituation to moderately intense stimuli in patients with schizophrenia. While not traditionally used as a measure of phys...

Habituation in acoustic startle reflex: individual differences in personality.

This study analyzed the relationship of individual differences in personality with habituation in the acoustic startle response (ASR). Data from nine trials in ASR to white noise bursts and a personality questionnaire based on the alternative big five personality approach were modelled with a latent growth curve (LCM) including intercept and slope habituation growth factors. There was a negativ...

Habituation and prepulse inhibition of acoustic startle in rodents.

The acoustic startle response is a protective response, elicited by a sudden and intense acoustic stimulus. Facial and skeletal muscles are activated within a few milliseconds, leading to a whole body flinch in rodents(1). Although startle responses are reflexive responses that can be reliably elicited, they are not stereotypic. They can be modulated by emotions such as fear (fear potentiated s...