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T. Freeman · SciRah

Researcher profile · Semantic Scholar

T. Freeman

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T. Freeman — researcher profile on SciRah

h-index: 42
Works: 162
Citations: 7,988

Most-cited papers

The contribution of cannabis use to variation in the incidence of psychotic disorder across Europe (EU-GEI): a multicentre case-control study
M. di Forti, D. Quattrone, T. Freeman, G. Tripoli +83 more
2019Lancet psychiatry689 citations Open access
Semantic Scholar
New trends in cannabis potency in USA and Europe during the last decade (2008–2017)
S. Chandra, M. Radwan, C. G. Majumdar, James C. Church +2 more
2019European Archives of Psychiatry and Clinical Neuroscience429 citations Open access
Semantic Scholar
Adverse effects of cannabidiol: a systematic review and meta-analysis of randomized clinical trials
E. Chesney, D. Oliver, Alastair Green, Simina Sovi +4 more
2020Neuropsychopharmacology255 citations Open access
Semantic Scholar
Changes in delta-9-tetrahydrocannabinol (THC) and cannabidiol (CBD) concentrations in cannabis over time: systematic review and meta-analysis.
T. Freeman, S. Craft, Jack Wilson, S. Stylianou +3 more
2020Addiction226 citations Open access
Semantic Scholar
The neuropsychopharmacology of cannabis: A review of human imaging studies
M. Bloomfield, C. Hindocha, S. F. Green, M. Wall +6 more
2019Pharmacology and Therapeutics208 citations Open access
Semantic Scholar
Medicinal use of cannabis based products and cannabinoids
T. Freeman, C. Hindocha, S. F. Green, M. Bloomfield
2019British medical journal196 citations Open access
Semantic Scholar
Association of cannabis potency with mental ill health and addiction: a systematic review.
K. Petrilli, S. Ofori, Lindsey A. Hines, G. Taylor +2 more
2022Lancet psychiatry184 citations Open access
Semantic Scholar
'Standard THC Units': a proposal to standardise dose across all cannabis products and methods of administration.
T. Freeman, V. Lorenzetti
2019Addiction183 citations Open access
Semantic Scholar
How does cannabidiol (CBD) influence the acute effects of delta-9-tetrahydrocannabinol (THC) in humans? A systematic review.
A. Freeman, K. Petrilli, R. Lees, C. Hindocha +4 more
2019Neuroscience and Biobehavioral Reviews180 citations Open access
Semantic Scholar
Association of High-Potency Cannabis Use With Mental Health and Substance Use in Adolescence
Lindsey A. Hines, T. Freeman, S. Gage, S. Zammit +5 more
2020JAMA psychiatry179 citations Open access
Semantic Scholar
Public health monitoring of cannabis use in Europe: prevalence of use, cannabis potency, and treatment rates
J. Manthey, T. Freeman, C. Kilian, H. López-Pelayo +1 more
2021The Lancet Regional Health - Europe176 citations Open access
Semantic Scholar
Cannabidiol for the treatment of cannabis use disorder: Phase IIa double-blind placebo-controlled randomised adaptive Bayesian dose-finding trial
T. Freeman, C. Hindocha, G. Baio, Natacha D. C. Shaban +12 more
2020Lancet psychiatry149 citations Open access
Semantic Scholar
Increasing potency and price of cannabis in Europe, 2006–16
T. Freeman, Teodora Groshkova, A. Cunningham, R. Sedefov +2 more
2019Addiction125 citations Open access
Semantic Scholar
Trends in the use of cannabis products in Canada and the USA, 2018 - 2020: Findings from the International Cannabis Policy Study.
David Hammond, Samantha Goodman, E. Wadsworth, T. Freeman +4 more
2022The International journal on drug policy115 citations Open access
Semantic Scholar
The effects of psychosocial stress on dopaminergic function and the acute stress response
Michael ap Bloomfield, R. McCutcheon, Matthew J. Kempton, T. Freeman +1 more
2019eLife94 citations Open access
Semantic Scholar
Does cannabidiol make cannabis safer? A randomised, double-blind, cross-over trial of cannabis with four different CBD:THC ratios
Amir Englund, D. Oliver, E. Chesney, Lucy A. Chester +9 more
2022Neuropsychopharmacology88 citations Open access
Semantic Scholar
The International Cannabis Toolkit (iCannToolkit): a multidisciplinary expert consensus on minimum standards for measuring cannabis use
V. Lorenzetti, C. Hindocha, K. Petrilli, P. Griffiths +21 more
2021Addiction86 citations Open access
Semantic Scholar
Cannabis and COVID-19: Reasons for Concern
M. V. van Laar, P. Oomen, C. W. J. van Miltenburg, Eefje Vercoulen +2 more
2020Frontiers in Psychiatry82 citations Open access
Semantic Scholar
Dissociable effects of cannabis with and without cannabidiol on the human brain’s resting-state functional connectivity
M. Wall, R. Pope, T. Freeman, Oliwia S. Kowalczyk +9 more
2019Journal of Psychopharmacology72 citations Open access
Semantic Scholar
Daily use of high potency cannabis is associated with more positive symptoms in first episode psychosis patients: the EU-GEI case-control study
D. Quattrone, L. Ferraro, G. Tripoli, C. La Cascia +37 more
2020Psychological Medicine67 citations Open access
Semantic Scholar
Cannabis and mental health: Prevalence of use and modes of cannabis administration by mental health status.
Jennifer Rup, T. Freeman, Christopher M. Perlman, D. Hammond
2021Addictive Behaviours48 citations Open access
Semantic Scholar
The CannTeen Study: Cannabis use disorder, depression, anxiety, and psychotic-like symptoms in adolescent and adult cannabis users and age-matched controls
W. Lawn, C. Mokrysz, R. Lees, K. Trinci +11 more
2022Journal of Psychopharmacology44 citations Open access
Semantic Scholar
Changes in the composition of cannabis from 2000-2017 in Denmark: Analysis of confiscated samples of cannabis resin.
Kristine Rømer Thomsen, C. Lindholst, B. Thylstrup, Sinikka L. Kvamme +5 more
2019Experimental and clinical psychopharmacology42 citations Open access
Semantic Scholar
The effects of acute cannabidiol on cerebral blood flow and its relationship to memory: An arterial spin labelling magnetic resonance imaging study
M. Bloomfield, S. F. Green, C. Hindocha, Y. Yamamori +8 more
2020Journal of Psychopharmacology37 citations Open access
Semantic Scholar
Lack of evidence for the effectiveness or safety of over-the-counter cannabidiol products
E. Chesney, P. McGuire, T. Freeman, J. Strang +1 more
2020Therapeutic Advances in Psychopharmacology34 citations Open access
Semantic Scholar
A standard THC unit for reporting of health research on cannabis and cannabinoids.
T. Freeman, V. Lorenzetti
2021Lancet psychiatry33 citations
Semantic Scholar
The acute effects of cannabis with and without cannabidiol in adults and adolescents: A randomised, double‐blind, placebo‐controlled, crossover experiment
W. Lawn, K. Trinci, C. Mokrysz, A. Borissova +12 more
2023Addiction32 citations Open access
Semantic Scholar
Illicit Drug Use and Associated Problems in the Nightlife Scene: A Potential Setting for Prevention
Kristin Feltmann, Tobias H. Elgán, Anna Strandberg, P. Kvillemo +6 more
2021International Journal of Environmental Research and Public Health32 citations Open access
Semantic Scholar
Weeding out the truth: a systematic review and meta-analysis on the transition from cannabis use to opioid use and opioid use disorders, abuse or dependence.
Jack Wilson, Katherine L. Mills, T. Freeman, M. Sunderland +2 more
2021Addiction31 citations
Semantic Scholar
Psychosocial and pharmacological treatments for cannabis use disorder and mental health comorbidities: a narrative review
R. Lees, Lindsey A. Hines, D. D'Souza, G. Stothart +3 more
2021Psychological Medicine30 citations Open access
Semantic Scholar
Legal sourcing of ten cannabis products in the Canadian cannabis market, 2019–2021: a repeat cross-sectional study
E. Wadsworth, V. Rynard, P. Driezen, T. Freeman +5 more
2023Harm Reduction Journal26 citations Open access
Semantic Scholar
Neural responses to reward anticipation and feedback in adult and adolescent cannabis users and controls
M. Skumlien, C. Mokrysz, T. Freeman, M. Wall +11 more
2022Neuropsychopharmacology26 citations Open access
Semantic Scholar
The acute effects of cannabidiol on emotional processing and anxiety: a neurocognitive imaging study
M. Bloomfield, Y. Yamamori, C. Hindocha, A. P. Jones +9 more
2020Psychopharmacology26 citations Open access
Semantic Scholar
Effects of cannabidiol on anandamide levels in individuals with cannabis use disorder: findings from a randomised clinical trial for the treatment of cannabis use disorder
Daniel Ying-Heng Hua, C. Hindocha, G. Baio, R. Lees +5 more
2023Translational Psychiatry22 citations Open access
Semantic Scholar
Individual and combined effects of cannabidiol and Δ9-tetrahydrocannabinol on striato-cortical connectivity in the human brain
M. Wall, T. Freeman, C. Hindocha, L. Demetriou +16 more
2022Journal of Psychopharmacology22 citations Open access
Semantic Scholar
Cannabis and Mental Health: Adverse Outcomes and Self-Reported Impact of Cannabis Use by Mental Health Status
Jennifer Rup, T. Freeman, Christopher M. Perlman, David Hammond
2022Substance Use & Misuse22 citations Open access
Semantic Scholar
Acute effects of cannabis on speech illusions and psychotic-like symptoms: two studies testing the moderating effects of cannabidiol and adolescence
C. Mokrysz, Natacha D. C. Shaban, T. Freeman, W. Lawn +8 more
2020Psychological Medicine22 citations Open access
Semantic Scholar
Substance Use and Attendance Motives of Electronic Dance Music (EDM) Event Attendees: A Survey Study
E. Van Dyck, K. Ponnet, T. Van Havere, Bert Hauspie +7 more
2023International Journal of Environmental Research and Public Health21 citations Open access
Semantic Scholar
The continuity of effect of schizophrenia polygenic risk score and patterns of cannabis use on transdiagnostic symptom dimensions at first-episode psychosis: findings from the EU-GEI study
D. Quattrone, U. Reininghaus, A. Richards, G. Tripoli +89 more
2021Translational Psychiatry21 citations Open access
Semantic Scholar
Acute and chronic effects of Δ9-tetrahydrocannabinol (THC) on cerebral blood flow: A systematic review.
M. Ogunbiyi, C. Hindocha, T. Freeman, M. Bloomfield
2020Progress in Neuro-psychopharmacology and Biological Psychiatry21 citations Open access
Semantic Scholar
Value‐based decision‐making of cigarette and nondrug rewards in dependent and occasional cigarette smokers: An FMRI study
W. Lawn, Ludo Mithchener, T. Freeman, A. Benattayallah +5 more
2020Addiction Biology20 citations Open access
Semantic Scholar
Associations between regular cannabis use and brain resting-state functional connectivity in adolescents and adults
N. Ertl, W. Lawn, C. Mokrysz, T. Freeman +10 more
2023bioRxiv19 citations Open access
Semantic Scholar
The acute effects of cannabidiol on the neural correlates of reward anticipation and feedback in healthy volunteers
W. Lawn, J. Hill, C. Hindocha, J. Yim +9 more
2020Journal of Psychopharmacology19 citations Open access
Semantic Scholar
High potency cannabis use, mental health symptoms and cannabis dependence: Triangulating the evidence.
K. Petrilli, Lindsey A. Hines, Sally Adams, C. Morgan +2 more
2023Addictive Behaviours18 citations Open access
Semantic Scholar
The CannTeen study: verbal episodic memory, spatial working memory, and response inhibition in adolescent and adult cannabis users and age-matched controls
W. Lawn, N. Fernandez-Vinson, C. Mokrysz, G. Hogg +10 more
2022Psychopharmacology18 citations Open access
Semantic Scholar
Effects of Cannabidiol and Delta-9-Tetrahydrocannabinol on Plasma Endocannabinoid Levels in Healthy Volunteers: A Randomized Double-Blind Four-Arm Crossover Study
Lucy A. Chester, Amir Englund, E. Chesney, D. Oliver +11 more
2022Cannabis and Cannabinoid Research18 citations Open access
Semantic Scholar
Anhedonia, Apathy, Pleasure, and Effort-Based Decision-Making in Adult and Adolescent Cannabis Users and Controls
M. Skumlien, C. Mokrysz, T. Freeman, Vincent Valton +11 more
2022International Journal of Neuropsychopharmacology16 citations Open access
Semantic Scholar
"How do online and offline sampling compare in a multinational study of drug use and nightlife behaviour?"
Jon Waldron, M. Grabski, T. Freeman, C. Mokrysz +17 more
2020The International journal on drug policy16 citations Open access
Semantic Scholar
Effect of four-week cannabidiol treatment on cognitive function: secondary outcomes from a randomised clinical trial for the treatment of cannabis use disorder
R. Lees, Lindsey A. Hines, C. Hindocha, G. Baio +6 more
2023Psychopharmacology15 citations Open access
Semantic Scholar
Effects of cannabinoids on resting state functional brain connectivity: a systematic review.
V. Lorenzetti, A. Gaillard, D. Thomson, Amir Englund +1 more
2022Neuroscience and Biobehavioral Reviews15 citations Open access
Semantic Scholar

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