All Outputs (37)

Adaptive spectral tracking for coherence estimation: the z-tracker (2018)
Journal Article
Halliday, D. M., Brittain, J.-S., 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.

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.

Basolateral amygdala activity during the retrieval of associative learning under anesthesia (2013)
Journal Article
Fenton, G. E., Spicer, C. H., Halliday, D. M., Mason, R., & Stevenson, C. W. (2013). Basolateral amygdala activity during the retrieval of associative learning under anesthesia. Neuroscience, 233, 146-156. https://doi.org/10.1016/j.neuroscience.2012.12.039

Associative learning can occur under anesthesia and its neural correlates have begun to be elucidated. During discrimination learning under anesthesia in rats, lateral amygdala excitability increases in response to a conditioned stimulus (CS+) previo... Read More about Basolateral amygdala activity during the retrieval of associative learning under anesthesia.

Role of amygdala-prefrontal cortex circuitry in regulating the expression of contextual fear memory (2011)
Journal Article
Stevenson, C. W. (2011). Role of amygdala-prefrontal cortex circuitry in regulating the expression of contextual fear memory. Neurobiology of Learning and Memory, 96(2), 315-323. https://doi.org/10.1016/j.nlm.2011.06.005

The basolateral amygdala (BLA) and medial prefrontal cortex (mPFC) are inter-connected regions involved in fear memory expression. The reciprocal nature of projections between these areas differs along the rostrocaudal extent of BLA. This study inves... Read More about Role of amygdala-prefrontal cortex circuitry in regulating the expression of contextual fear memory.

Early life programming of fear conditioning and extinction in adult male rats (2009)
Journal Article
Stevenson, C. W., Spicer, C. H., Mason, R., & Marsden, C. A. (2009). Early life programming of fear conditioning and extinction in adult male rats. Behavioural Brain Research, 205(2), 505-510. https://doi.org/10.1016/j.bbr.2009.08.005

The early rearing environment programs corticolimbic function and neuroendocrine stress reactivity in adulthood. Although early environmental programming of innate fear has been previously examined, its impact on fear learning and memory later in lif... Read More about Early life programming of fear conditioning and extinction in adult male rats.

Neonatal maternal separation alters reward-related ultrasonic vocalizations in rat dams (2009)
Journal Article
Stevenson, C. W., Goodwin, P. E., Tunstall, B., Spicer, C. H., Marsden, C. A., & Mason, R. (2009). Neonatal maternal separation alters reward-related ultrasonic vocalizations in rat dams. Behavioural Brain Research, 200(1), 232-236. https://doi.org/10.1016/j.bbr.2009.01.035

We examined the effects of brief or long durations of repeated maternal separation (MS) on ultrasonic vocalizations (USVs) in rat dams. 50-kHz USVs putatively identified as maternal in origin were emitted only immediately after pups were returned fol... Read More about Neonatal maternal separation alters reward-related ultrasonic vocalizations in rat dams.

Early life programming of innate fear and fear learning in adult female rats (2008)
Journal Article
Stevenson, C. W., Meredith, J. P., Spicer, C. H., Mason, R., & Marsden, C. A. (2009). Early life programming of innate fear and fear learning in adult female rats. Behavioural Brain Research, 198(1), 51-57. https://doi.org/10.1016/j.bbr.2008.10.021

The early rearing environment can impact on emotional reactivity and learning later in life. In this study the effects of neonatal maternal separation (MS) on innate fear and fear learning were assessed in the adult female rat. Pups were subjected to... Read More about Early life programming of innate fear and fear learning in adult female rats.

Early life programming of hemispheric lateralization and synchronization in the adult medial prefrontal cortex (2008)
Journal Article
Stevenson, C. W., Halliday, D. M., Marsden, C. A., & Mason, R. (2008). Early life programming of hemispheric lateralization and synchronization in the adult medial prefrontal cortex. Neuroscience, 155(3), 852-863. https://doi.org/10.1016/j.neuroscience.2008.06.013

Neonatal maternal separation (MS) in the rat increases the vulnerability to stressors later in life. In contrast, brief handling (H) in early life confers resilience to stressors in adulthood. Early life programming of stress reactivity may involve t... Read More about Early life programming of hemispheric lateralization and synchronization in the adult medial prefrontal cortex.

Early life stress causes FG-7142-induced corticolimbic dysfunction in adulthood (2007)
Journal Article
Stevenson, C. W., Marsden, C. A., & Mason, R. (2008). Early life stress causes FG-7142-induced corticolimbic dysfunction in adulthood. Brain Research, 1193, 43-50. https://doi.org/10.1016/j.brainres.2007.11.062

Maternal separation (MS) during the neonatal period enhances stress responsivity in adulthood. The medial prefrontal cortex (mPFC) and the basolateral amygdala (BLA) are involved in coordinating various stress responses. Evidence indicates that MS re... Read More about Early life stress causes FG-7142-induced corticolimbic dysfunction in adulthood.

Systemic administration of the benzodiazepine receptor partial inverse agonist FG-7142 disrupts corticolimbic network interactions (2007)
Journal Article
Stevenson, C. W., Halliday, D. M., Marsden, C. A., & Mason, R. (2007). Systemic administration of the benzodiazepine receptor partial inverse agonist FG-7142 disrupts corticolimbic network interactions. Synapse, 61(8), 646-663. https://doi.org/10.1002/syn.20414

The medial prefrontal cortex (mPFC) and basolateral amygdala(BLA) coordinate various stress responses. Although the effects of stressors on mPFCand BLA activity have been previously examined, it remains unclear to what extent stressors affect functio... Read More about Systemic administration of the benzodiazepine receptor partial inverse agonist FG-7142 disrupts corticolimbic network interactions.