All Outputs (32)

Dopamine D1-like receptors in the dorsomedial prefrontal cortex regulate contextual fear conditioning (2019)
Journal Article
Stubbendorff, C., Hale, E., Cassaday, H. J., Bast, T., & Stevenson, C. W. (2019). Dopamine D1-like receptors in the dorsomedial prefrontal cortex regulate contextual fear conditioning. Psychopharmacology, 236(6), 1771-1782. https://doi.org/10.1007/s00213-018-5162-7

Rationale Dopamine D1 receptor (D1R) signalling is involved in contextual fear conditioning. The D1R antagonist SCH23390 impairs the acquisition of contextual fear when administered systemically or infused locally into the dorsal hippocampus or ba... Read More about Dopamine D1-like receptors in the dorsomedial prefrontal cortex regulate contextual fear conditioning.

Metallome of cerebrovascular endothelial cells infected with Toxoplasma gondii using ?-XRF imaging and inductively coupled plasma mass spectrometry (2018)
Journal Article
Al-sandaqchi, A. T., Brignell, C., Collingwood, J. F., Geraki, K., Mirkes, E. M., Kong, K., …Elsheikha, H. M. (2018). Metallome of cerebrovascular endothelial cells infected with Toxoplasma gondii using μ-XRF imaging and inductively coupled plasma mass spectrometry. Metallomics, 1401-1414. https://doi.org/10.1039/C8MT00136G

In this study, we measured the levels of elements in human brain microvascular endothelial cells (ECs) infected with T. gondii. ECs were infected with tachyzoites of the RH strain, and at 6, 24, and 48 hours post infection (hpi), the intracellular co... Read More about Metallome of cerebrovascular endothelial cells infected with Toxoplasma gondii using ?-XRF imaging and inductively coupled plasma mass spectrometry.

Adaptive spectral tracking for coherence estimation: the z-tracker (2018)
Journal Article
Halliday, D. M., Brittain, J., Stevenson, C. W., & Mason, R. (2018). Adaptive spectral tracking for coherence estimation: the z-tracker. Journal of Neural Engineering, 15(2), https://doi.org/10.1088/1741-2552/aaa3b4

Objective: A major challenge in non-stationary signal analysis is reliable estimation of correlation. Neurophysiological recordings can be many minutes in duration with data that exhibits correlation which changes over different time scales. Local sm... Read More about Adaptive spectral tracking for coherence estimation: the z-tracker.

Cannabidiol regulation of emotion and emotional memory processing: relevance for treating anxiety-related and substance abuse disorders (2017)
Journal Article
Lee, J. L., Bertoglio, L. J., Guimaraes, F. S., & Stevenson, C. W. (in press). Cannabidiol regulation of emotion and emotional memory processing: relevance for treating anxiety-related and substance abuse disorders. British Journal of Pharmacology, https://doi.org/10.1111/bph.13724

Learning to associate cues or contexts with potential threats or rewards is adaptive and enhances survival. Both aversive and appetitive memories are therefore powerful drivers of behaviour, but the inappropriate expression of conditioned responding... Read More about Cannabidiol regulation of emotion and emotional memory processing: relevance for treating anxiety-related and substance abuse disorders.

Bidirectional effects of cannabidiol on contextual fear memory extinction (2016)
Journal Article
Song, C., Stevenson, C. W., Guimaraes, F. S., & Lee, J. L. (2016). Bidirectional effects of cannabidiol on contextual fear memory extinction. Frontiers in Pharmacology, 7(493), https://doi.org/10.3389/fphar.2016.00493

Cannabidiol (CBD) has been established to have both acute and long-lasting effects to reduce fear memory expression. The long-lasting impact might be mediated by an enhancement of memory extinction or an impairment of memory reconsolidation. Here, we... Read More about Bidirectional effects of cannabidiol on contextual fear memory extinction.

Cannabidiol regulation of learned fear: implications for treating anxiety-related disorders (2016)
Journal Article
Jurkus, R., Day, H. L., Guimaraes, F. S., Lee, J. L., Bertoglio, L. J., & Stevenson, C. W. (2016). Cannabidiol regulation of learned fear: implications for treating anxiety-related disorders. Frontiers in Pharmacology, 7(454), https://doi.org/10.3389/fphar.2016.00454

Anxiety and trauma-related disorders are psychiatric diseases with a lifetime prevalence of up to 25%. Phobias and post-traumatic stress disorder (PTSD) are characterized by abnormal and persistent memories of fear-related contexts and cues. The effe... Read More about Cannabidiol regulation of learned fear: implications for treating anxiety-related disorders.

Sex differences in discriminating between cues predicting threat and safety (2016)
Journal Article
Day, H. L., Reed, M. M., & Stevenson, C. W. (2016). Sex differences in discriminating between cues predicting threat and safety. Neurobiology of Learning and Memory, 133, 196-203. https://doi.org/10.1016/j.nlm.2016.07.014

Post-traumatic stress disorder (PTSD) is more prevalent in women than men. PTSD is characterized by overgeneralization of fear to innocuous stimuli and involves impaired inhibition of learned fear by cues that predict safety. While evidence indicates... Read More about Sex differences in discriminating between cues predicting threat and safety.

Sex differences in learned fear expression and extinction involve altered gamma oscillations in medial prefrontal cortex (2016)
Journal Article
Fenton, G., Halliday, D., Mason, R., Bredy, T. W., & Stevenson, C. W. (2016). Sex differences in learned fear expression and extinction involve altered gamma oscillations in medial prefrontal cortex. Neurobiology of Learning and Memory, 135, https://doi.org/10.1016/j.nlm.2016.06.019

Sex differences in learned fear expression and extinction involve the medial prefrontal cortex (mPFC). We recently demonstrated that enhanced learned fear expression during auditory fear extinction and its recall is linked to persistent theta activat... Read More about Sex differences in learned fear expression and extinction involve altered gamma oscillations in medial prefrontal cortex.

Non-parametric directionality analysis: extension for removal of a single common predictor and application to time series (2016)
Journal Article
Halliday, D. M., Senik, M. H., Stevenson, C. W., & Mason, R. (2016). Non-parametric directionality analysis: extension for removal of a single common predictor and application to time series. Journal of Neuroscience Methods, 268, https://doi.org/10.1016/j.jneumeth.2016.05.008

BACKGROUND: The ability to infer network structure from multivariate neuronal signals is central to computational neuroscience. Directed network analyses typically use parametric approaches based on auto-regressive (AR) models, where networks are con... Read More about Non-parametric directionality analysis: extension for removal of a single common predictor and application to time series.

Dopamine D1-like receptor signalling in the hippocampus and amygdala modulates the acquisition of contextual fear conditioning (2015)
Journal Article
Voigt, J. P., Lee, J. L. C., Heath, F. C., Jurkus, R., Bast, T., Pezze, M. A., …Stevenson, C. W. (2015). Dopamine D1-like receptor signalling in the hippocampus and amygdala modulates the acquisition of contextual fear conditioning. Psychopharmacology, 232(14), 2619-2629. https://doi.org/10.1007/s00213-015-3897-y

RATIONALE: Dopamine D1-like receptor signalling is involved in contextual fear conditioning, but the brain regions involved and its role in other contextual fear memory processes remain unclear. OBJECTIVES: The objective of this study was to inves... Read More about Dopamine D1-like receptor signalling in the hippocampus and amygdala modulates the acquisition of contextual fear conditioning.

Persistent prelimbic cortex activity contributes to enhanced learned fear expression in females (2014)
Journal Article
Fenton, G., Pollard, A. K., Halliday, D., Mason, R., Bredy, T. W., & Stevenson, C. W. (2014). Persistent prelimbic cortex activity contributes to enhanced learned fear expression in females. Learning and Memory, 21(2), https://doi.org/10.1101/lm.033514.113

Anxiety disorders, such as post-traumatic stress, are more prevalent in women and are characterized by impaired inhibition of learned fear and medial prefrontal cortex (mPFC) dysfunction. Here we examined sex differences in fear extinction and mPFC a... Read More about Persistent prelimbic cortex activity contributes to enhanced learned fear expression in females.

Medial prefrontal cortex circuit function during retrieval and extinction of associative learning under anesthesia (2014)
Journal Article
Fenton, G., Halliday, D., Mason, R., & Stevenson, C. W. (2014). Medial prefrontal cortex circuit function during retrieval and extinction of associative learning under anesthesia. Neuroscience, 265, https://doi.org/10.1016/j.neuroscience.2014.01.028

Associative learning is encoded under anesthesia and involves the medial prefrontal cortex (mPFC). Neuronal activity in mPFC increases in response to a conditioned stimulus (CS+) previously paired with an unconditioned stimulus (US) but not during pr... Read More about Medial prefrontal cortex circuit function during retrieval and extinction of associative learning under anesthesia.