Lesions of the bed nucleus of the stria terminalis block sensitization of the acoustic startle reflex produced by repeated stress, but not fear-potentiated startle

1998 ◽  
Vol 22 (4) ◽  
pp. 625-648 ◽  
Author(s):  
Jonathan C. Gewirtz ◽  
Kenneth A. Mcnish ◽  
Michael Davis
Keyword(s):  
Acoustic Startle ◽  
Startle Reflex ◽  
Acoustic Startle Reflex ◽  
Stria Terminalis ◽  
Bed Nucleus ◽  
Repeated Stress ◽  
Fear Potentiated Startle

scholarly journals Amygdala and bed nucleus of the stria terminalis: differential roles in fear and anxiety measured with the acoustic startle reflex

1997 ◽  
Vol 352 (1362) ◽  
pp. 1675-1687 ◽  
Author(s):  
◽  
Michael Davis ◽  
David L. Walker ◽  
Younglim Lee
Keyword(s):  
Excitatory Amino Acid ◽  
Conditioned Fear ◽  
Acoustic Startle ◽  
Acoustic Startle Reflex ◽  
Stria Terminalis ◽  
Bed Nucleus ◽  
Amino Acid Receptors ◽  
Sensory Modalities ◽  
Behavioural Tests ◽  
Fear And Anxiety

Neural stimuli associated with traumatic events can readily become conditioned so as to reinstate the memory of the original trauma. These conditioned fear responses can last a lifetime and may be especially resistant to extinction. A large amount of data from many different laboratories indicate that the amygdala plays a crucial role in conditioned fear. The amygdala receives information from all sensory modalities and projects to a variety of hypothalamic and brainstem target areas known to be critically involved in specific signs that are used to define fear and anxiety. Electrical stimulation of the amygdala elicits a pattern of behaviours that mimic natural or conditioned states of fear. Lesions of the amygdala block innate or conditioned fear and local infusion of drugs into the amygdala have anxiolytic effects in several behavioural tests. Excitatory amino acid receptors in the amygdala are critical for the acquisition, expression and extinction of conditioned fear.

Modulation of the acoustic startle reflex by emotionally-toned filmclips

1996 ◽  
Author(s):  
Hossein Kaviani ◽  
Jeffrey A. Gray ◽  
Stuart A. Checkley ◽  
Veena Kumari ◽  
Philip J. Corr ◽  
...  
Keyword(s):  
Acoustic Startle ◽  
Startle Reflex ◽  
Acoustic Startle Reflex
Sign in / Sign up

Export Citation Format

Share Document