Search Results - "McTavish, Sarah F.B."

The effects of quetiapine on risky decision-making by Rock, Philippa L, Harmer, Catherine J, McTavish, Sarah F.B, Goodwin, Guy M, Rogers, Robert D

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Effect of a selective 5-hydroxytryptamine reuptake inhibitor on brain extracellular noradrenaline: microdialysis studies using paroxetine by Hajós-Korcsok, Éva, McTavish, Sarah F.B, Sharp, Trevor

“…The clinical efficacy of selective serotonin (5-hydroxytryptamine, 5-HT) reuptake inhibitors (SSRIs) is normally attributed to their ability to increase brain…”
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Tyrosine depletion attenuates the behavioural stimulant effects of amphetamine and cocaine in rats by McTavish, Sarah F.B, Raumann, Ben, Cowen, Philip J, Sharp, Trevor

“…Neurochemical studies show that a tyrosine-free amino acid mixture depletes brain tyrosine and decreases dopamine synthesis and release. Here, we tested…”
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Effects of short-term quetiapine treatment on emotional processing, sleep and circadian rhythms by Rock, Philippa L, Goodwin, Guy M, Wulff, Katharina, McTavish, Sarah FB, Harmer, Catherine J

“…Background: Quetiapine is an atypical antipsychotic that can stabilise mood from any index episode of bipolar disorder. This study investigated the effects of…”
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Short-term quetiapine treatment alters the use of reinforcement signals during risky decision-making and promotes the choice of negative expected values in healthy adult males by Rock, Philippa L, Harmer, Catherine J, McTavish, Sarah F B, Goodwin, Guy M, Rogers, Robert D

“…Effective decision-making can involve using environmental signals about the possible good and bad outcomes, and their probabilities, to select optimal actions…”
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Reduction of Brain Dopamine Concentration With Dietary Tyrosine Plus Phenylalanine Depletion: An [11C]Raclopride PET Study by Montgomery, Andrew J., McTavish, Sarah F.B., Cowen, Philip J., Grasby, Paul M.

“…OBJECTIVE: Extracellular dopamine concentrations were estimated through measurement of [11C]raclopride binding with positron emission tomography after dietary…”
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Does agomelatine block 5-HT2C receptors in humans? by Sharpley, Ann L., Rawlings, Nancy B., Brain, Susannah, McTavish, Sarah F. B., Cowen, Philip J.

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The effects of acute tyrosine and phenylalanine depletion on spatial working memory and planning in healthy volunteers are predicted by changes in striatal dopamine levels by Mehta, Mitul A, Gumaste, Deepa, Montgomery, Andrew J, McTavish, Sarah F B, Grasby, Paul M

“…Dopamine (DA) is considered important in the modulation of tasks of spatial working memory. However, the findings from studies in humans to date are mixed…”
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Low-dose tryptophan depletion in recovered depressed women induces impairments in autobiographical memory specificity by Haddad, Anneke D. M., Williams, J. Mark G., McTavish, Sarah F. B., Harmer, Catherine J.

“…Background Depressed patients perform poorly on tests of autobiographical memory specificity (AMS); this may have negative consequences for other important…”
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Effect of a tyrosine-free amino acid mixture on regional brain catecholamine synthesis and release by MCTAVISH, S. F. B, COWEN, P. J, SHARP, T

“…We report the effects of a tyrosine (and phenylalanine)-free amino acid mixture on tyrosine levels, ex vivo catecholamine synthesis and in vivo catecholamine…”
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Tyrosine depletion alters cortical and limbic blood flow but does not modulate spatial working memory performance or task-related blood flow in humans by Ellis, Kathryn A., Mehta, Mitul A., Naga Venkatesha Murthy, P.J., McTavish, Sarah F.B., Nathan, Pradeep J., Grasby, Paul M.

“…Dopamine appears critical in regulating spatial working memory (SWM) within the PFC of non‐human primates; however findings in humans are less clear. Recent…”
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Lack of Effect of Tyrosine Depletion on Mood in Recovered Depressed Women by MCTAVISH, Sarah F. B, MANNIE, Zola N, HARMER, Catherine J, COWEN, Philip J

“…The role of dopamine (DA) pathways in the pathophysiology of depressive disorder is poorly understood. However, because DA plays a key role in motivational…”
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Repetitive transcranial magnetic stimulation to right prefrontal cortex does not modulate the psychostimulant effects of amphetamine by Clark, Luke, McTavish, Sarah F. B., Harmer, Catherine J., Mills, Kerry R., Cowen, Philip J., Goodwin, Guy M.

“…Preliminary evidence indicates lateralized efficacy of repetitive transcranial magnetic stimulation (rTMS) in the treatment of mood disorders. Right-sided…”
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