User:Perminder Sachdev/sandbox

  Perminder Sachdev   

Perminder Sachdev, AM, MD, PhD, FRANZCP (born 1956) is an internationally renowned neuropsychiatrist based in Australia [1]. He is the Scientia Professor of Neuropsychiatry at the University of New South Wales (UNSW), Australia, and the Clinical Director of the Neuropsychiatric Institute (NPI) at the Prince of Wales Hospital, Sydney, Australia [2].

1.	Early life

Professor Sachdev was born in Ludhiana, India [3]. He received his MBBS from the All-India Institute of Medical Sciences (AIIMS) in 1978, his MD in psychiatry from AIIMS in 1981, and his PhD in psychiatry from UNSW in 1991 [4]. Sachdev’s early research was in the field of transcultural psychiatry [5]. His papers remain the most comprehensive descriptions of Maori ethnopsychiatric constructs in the medical-psychiatric literature [6].

2.	Clinical & Research Achievements

Professor Sachdev is the Clinical Director of the NPI at the Prince of Wales Hospital, the only institute of its kind in Australia [7]. He has played a leading role in the development of higher training in Neuropsychiatry through his leadership of the International Neuropsychiatric Association (INA), and the Neuropsychiatry Section of the RANZCP [8]. The NPI has trained specialists in neuropsychiatry from Australia, New Zealand, Malaysia, Iran, India, Germany and China. Professor Sachdev’s major contribution to psychiatric research has been in the field of movement disorders, where he has produced pioneering and seminal papers on drug-induced akathisia, tardive dystonia, neuroleptic malignant syndrome, Tourette Syndrome, golfer’s cramp and psychomotor retardation in melancholia [9]. Sachdev was the first to fully characterize akathisia and its subtypes, including developing a rating scale and research diagnostic criteria, and his work remains the most definitive on drug-induced akathisia [10].

Professor Sachdev has also performed one of the most comprehensive studies of late-onset schizophrenia [11], as well as having published the largest case control study of head injury and schizophrenia-like psychosis [12]. He published the first negative study of Transcranial Magnetic Stimulation (TMS) for depression [13], the first TMS treatment study of Obsessive Compulsive Disorder (OCD) [14], and the first study that examined the effect of different frequencies of TMS on an animal model of depression [15].

Since 1997, Professor Sachdev’s major area of research has been cognitive disorders [16]. He is currently directing one of the largest community based studies of brain imaging in collaboration with the Australian PATH Through Life Study being conducted by the Centre for Mental Health Research at the Australian National University [17], in addition to a number of other neuroimaging, twin, vascular cognitive impairment, and memory and ageing studies [18]. Sachdev has contributed to the diagnosis of dementia as a member of the Neurocognitive Disorders Workgroup for the DSM-5 [19]. He has also contributed to the field of epilepsy research as an invited member of the Task Force of the International League Against Epilepsy (ILAE) Neuropsychobiology Commission [20].

3.	Honours and awards

In 2011, Professor Sachdev was made a Member of the Order of Australia (AM) for “services to medical research in the field of neuropsychiatry, as a clinician and academic, and to professional associations at a national and international level” [21]. He has received numerous other awards, including the NSW Scientist of the Year in Biomedical Sciences (2010) [22] and the Organon Senior Research Award, Royal Australian & New Zealand College of Psychiatrists (RANZCP) for the best research by an Australian or New Zealand psychiatrist in the previous five years (1995) [23]. He occupied the first chair of Neuropsychiatry in Australia [24].

Professor Sachdev is a Founding Executive Committee Member of the Tourette Syndrome Association of Australia [25]. He was elected President (2004–2006) of the International Neuropsychiatric Association [26]. Professor Sachdev was international advisor to the Psychosurgery Review Committee of the American Neurosurgical Society and a member of the F1000 Reports advisory board. He has served on the editorial board of a number of international peer-reviewed journals, including the American Journal of Geriatric Psychiatry (the number 1 journal related to geriatric psychiatry), Neuropsychiatric Disorders and Treatment, Acta Neuropsychiatrica and Current Opinion in Psychiatry [27].

Professor Sachdev is listed in Outstanding Scientists of the 21st Century (1st ed.), American Biographical Institute’s Great Minds of the 21st Century (2004 ed.), 2000 Outstanding Intellectuals of the 21st Century, Outstanding People of the 20th Century, Dictionary of International Biography (32nd and 33rd eds), The Cambridge Blue Book (2005), Marquis Who’s Who in the World (24th ed.), International Who’s Who of Professionals, Who’s Who in Medicine and Healthcare (6th ed.), and Who’s Who in Science and Engineering (9th ed.), Who’s Who in Asia and the Pacific Nations (4th ed.) and Who’s Who in Australia (2011).

4.	Bibliography

Professor Sachdev is the author/editor of 5 books, first author for 31 and co-author for 10 book chapters, and has been involved as first- or co-author for over 278 papers in refereed journals [28]. His work has received over 5000 citations to date [29].


 * Dube S & Sachdev PS (Editors). Mental Health Problems of the Socially Disadvantaged. Tata McGraw Hill Publications, New Delhi, 1983.

Papers presented at a seminar on 'Mental Health Problems of the Socially Disadvantaged' held at the All India Institute of Medical Sciences (AIIMS), New Delhi, on Feb. 27-28, 1982, organised by the Department of Psychiatry, AIIMS.


 * Sachdev PS. Akathisia and Restless Legs. New York: Cambridge University Press, 1995.

This volume provides the first comprehensive account of the scientific and clinical aspects of akathisia and related syndromes such as restless legs syndrome (RLS), other forms of motor restlessness, and neuroleptic-induced dysphoria. The main focus is on drug-induced akathisia and its various subtypes. The author explores its relationship to the restlessness caused by other neurological disorders, presents a new synthesis of the pathophysiological mechanisms of akathisia, and provides arguments for new operational criteria for the research diagnosis of drug-induced akathisia. Strategies for the measurement of akathisia are also discussed, as are treatment approaches.

Publisher: http://www.cambridge.org/aus/catalogue/catalogue.asp?isbn=9780511883378


 * Sachdev PS (Editor). The Ageing Brain.  The Neurobiology and Neuropsychiatry of Ageing. Swets & Zeitlinger: Lisse, The Netherlands, 2003.

This volume brings together chapters on characteristics of the ageing brain, factors influencing brain ageing, and the clinical interface with brain ageing. It deals with some of the most prominent brain disorders of old age – Alzheimer’s disease, Parkinson’s disease, Vascular Dementia, and Depression – and the impact of ageing on these disorders.

Publisher: http://www.crcpress.com/product/isbn/9789026519437


 * Sachdev P. The Yipping Tiger and Other Tales from the Neuropsychiatric Clinic. UNSW Press: Sydney, Australia & Johns Hopkins Press: Baltimore, USA, 2009.

This volume includes ten cases-studies drawn from the neuropsychiatric clinic. Covering golfer’s cramp, alien hand syndrome, Tourette’s syndrome, brain enhancement, anorexia nervosa, frontal lobe dysfunction, major depression, Obsessive-compulsive disorder, phantom limb and mild cognitive impairment, these case-studies reveal the latest research on the vast and intricate processes of the human brain, as well as the challenges they pose for both doctor and patient.

Publisher: http://www.unswpress.com.au/isbn/9781742230849.htm


 * Sachdev PS (Ed) & Keshavan M (Consulting Ed.) Secondary Schizophrenia. Cambridge University Press: New York, 2010.

Schizophrenia may not be a single disease, but the result of a diverse set of related conditions. Modern neuroscience is beginning to reveal some of the genetic and environmental underpinnings of schizophrenia; however, an approach less well travelled is to examine the medical disorders that produce symptoms resembling schizophrenia. This book is the first major attempt to bring together the diseases that produce what has been termed 'secondary schizophrenia'. International experts from diverse backgrounds ask the questions: does this medical disorder, or drug, or condition cause psychosis? If yes, does it resemble schizophrenia? What mechanisms form the basis of this relationship? What implications does this understanding have for aetiology and treatment?

Publisher: http://www.cambridge.org/aus/catalogue/catalogue.asp?isbn=9780511786235

5.	External Links

BARP	http://psych.med.unsw.edu.au/psychweb.nsf/page/Brainage

UNSW Research Gateway http://research.unsw.edu.au/people/scientia-professor-perminder-singh-sachdev

6.	References

[1] ‘Perminder Singh Sachdev’ in Who’s Who in the World (24th ed.) 2007.

[2] UNSW Research Gateway, http://research.unsw.edu.au/people/scientia-professor-perminder-singh=sachdev. Retrieved 4 July 2011.

[3] ‘Perminder Singh Sachdev’ in Who’s Who in Australia 2011. Crown Content Pty Ltd; Melbourne, 2010. Accessed on-line: http://crownweb.crowncontent.com.au/ww/. Retrieved 6 July 2011.

[4] ‘Perminder Singh Sachdev’ in Who’s Who in the World (24th ed.) 2007; UNSW Research Gateway, http://research.unsw.edu.au/people/scientia-professor-perminder-singh-sachdev. Retrieved 4 July 2011.

[5] Sachdev PS, Shukla A. Epidemic Koro syndrome in India. The Lancet 1982; ii: 1161; Sachdev PS. Koro epidemic in northeast India. Aust N Z J Psychiatry 1985; 19(4):433 36.

[6] Sachdev PS. Psychiatric illness in the New Zealand Maori. Aust NZ J Psychiatry 1989; 23:529 541; Sachdev PS. Mana, Tapu, Noa: Maori cultural constructs with medical and psycho social relevance. Psychol Med 1989; 19:959 970; Sachdev PS. Maori elder-patient relationship as a therapeutic paradigm. Psychiatry 1989; 53:393 403; Sachdev PS. Behavioural factors affecting physical health of the New Zealand Maori. Soc Sci Med 1990; 30(4):431 440; Sachdev PS. Whakama: culturally determined behaviour in the New Zealand Maori. Psychol Med 1990; 20:433 444; Sachdev PS. Personality development in traditional Maori society and the impact of modernization. Psychiatry 1990; 53 (3):289 303; Sachdev PS. Overview: Mental health and illness of the New Zealand Maori. Transcultural Psychiatric Research Review 1990; 27:85 111.

[7] ‘Perminder Singh Sachdev’ in Who’s Who in Australia 2011. Crown Content Pty Ltd; Melbourne, 2010. Accessed on-line: http://crownweb.crowncontent.com.au/ww/. Retrieved 6 July 2011; UNSW Research Gateway, http://research.unsw.edu.au/people/scientia-professor-perminder-singh-sachdev. Retrieved 4 July 2011; Herbertson L, Rice M, ‘Our Local Heroes Queen’s Birthday Honours 2011’, Wentworth Courier, 15 June 2011, 6; Neuropsychiatric Institute, http://web.med.unsw.edu.au/npi/About/index.htm. Retrieved 4 July 2011.

[8] The Queen's Birthday 2011 Honours List, http://www.gg.gov.au/res/file/2011/honours/qb11/Media%20Notes%20AM%20(M-Z)%20(final).pdf, 68. Retrieved 4 July 2011.

[9] Sachdev PS. Clinical characteristics of 15 patients with tardive dystonia. Am J Psychiatry 1993; 150:498 500; Sachdev PS. Risk factors for tardive dystonia: A case control comparison with tardive dyskinesia. Acta Psychiatr Scand 1993; 88:98 103; Sachdev PS. Tardive and chronically recurrent oculogyric crises. Mov Disord 1993: 1:93-97; Sachdev P. Tardive blepharospasm. Mov Disorders 1998; 13(6):947-951; Sachdev PS. Psychoactive drug use in an institution for intellectually handicapped persons. Med J Australia 1991; 155:75 79; Kruk J, Sachdev P, Singh S. Neuroleptic-induced respiratory dyskinesia. J Neuropsych Clin Neurosci 1995; 7(2):223-229; Sachdev P, Mason C, Hadzi-Pavlovic H. A case controlled study of neuroleptic malignant syndrome. Am J Psychiatry 1997; 154:1156-1158; Sachdev PS. A rating scale for neuroleptic malignant syndrome (NMS). Psychiatry Research 2005; 135:249-256; Chee K, Sachdev P. The clinical features of Tourette’s Disorder: an Australian study using a structured interview schedule. Aust NZ J Psychiatry 1994; 28:313-318; Chee K-Y, Sachdev P. A controlled study of sensory tics in Gilles de la Tourette syndrome and obsessive-compulsive disorder using a structured interview. J Neurol Neurosurg Psychiatry 1997; 62; 188-192; Sachdev P, Chee K, Aniss A. The audiogenic startle reflex in Tourette's Syndrome. Biol Psychiatry 1997; 41:796-803; Sachdev PS. Golfers' cramp: Clinical characteristics and evidence against it being an anxiety disorder. Mov Disord 1992; 4:326 332; Sachdev PS, Aniss AM. Slowness of movement in melancholic depression. Biol Psychiatry 1994; 35:253-262.

[10] Sachdev P, Chee K-Y. Pharmacological characterization of tardive akathisia. Biol Psychiatry 1990; 28:809–818; Sachdev P, Loneragan C. The present status of akathisia, J Nerv Ment Dis 1991; 179:381–391; Sachdev P, Loneragan C. Low dose apomorphine challenge in acute neuroleptic-induced akathisia. Neurology 1993; 43:544–547; Sachdev P, Kruk J. Clinical characteristics and predisposing factors in acute drug induced akathisia. Arch Gen Psychiatry 1994; 51:963-974; Sachdev P. Research diagnostic criteria for drug-induced akathisia: conceptualization, rationale, and proposal. Psychopharmacology (Berl) 1994; 114:181-186; Sachdev P. A rating scale for acute drug-induced akathisia: development, reliability and validity. Biol Psych 1994; 35(4):263-271; Sachdev P. The epidemiology of drug-induced akathisia, I: acute akathisia. Schizophr Bull 1995; 21:431-449; Sachdev P. The epidemiology of drug-induced akathisia. II: chronic, tardive, and withdrawal akathisias. Schizophr Bull 1995; 21:451-461; Sachdev P. The development of the concept of akathisia: a historical overview. Schizophr Res 1995; 16:33-45; Sachdev PS. Akathisia and Restless Legs. New York: Cambridge University Press, 1995; Sachdev P, Hume F, Toohey P, Doutney C. Negative symptoms, cognitive dysfunction, tardive akathisia and tardive dyskinesia. Acta Psychiatr Scand 1996; 93(6):451-459; Sachdev P. Animal models of drug-induced akathisia. In LeDoux MS (Ed). Animal models of movement disorders. Academic Press, Elsevier Inc: USA, 2004:745-753; Sachdev P. Acute and tardive drug-induced akathisia. In Sethi KD (Ed). Drug-induced Movement Disorders. Neurological Disease and Therapy Series. Macel Dekker, New York, 2005:129-164.

[11] Brodaty H, Sachdev P, Rose N, Rylands K, Prenter L. Schizophrenia with onset after age 50 years. 1: Phenomenology and risk factors. Br J Psychiatry 1999; 175: 410-415; Sachdev P, Brodaty H, Rose N, Cathcart S. Schizophrenia with onset after age 50 years. 2: A neurological, neuropsychological and MRI investigation. Br J Psychiatry 1999; 175:416-421.

[12] Sachdev P, Smith JS, Cathcart S. Schizophrenia-like psychosis following traumatic brain injury: a chart-based descriptive and case-control study. Psychological Medicine 2001; 31(2):231-239. [13] Loo C, Mitchell P, Sachdev P, et al. Double-blind controlled investigation of transcranial magnetic stimulation for the treatment of resistant major depression. American Journal of Psychiatry 1999; 156(6):946-948.

[14] Sachdev PS, Loo CK, Mitchell PB, McFarquhar TF, Malhi GS. Repetitive transcranial magnetic stimulation for the treatment of obsessive compulsive disorder: a double-blind controlled investigation. Psychological Medicine 2007; 37:1645-1650.

[15] Hargreaves GA, McGregor IS, Sachdev PS. Chronic repetitive transcranial magnetic stimulation is antidepressant but not anxiolytic in rat models of anxiety and depression. Psychiatry Research 2005; 137:113-121.

[16] ‘New insights into brain functions’, Southern Courier, 15 February 2011, 28; ‘All in the mind: On the couch: Perminder Sachdev and Norman Doidge’, ABC Radio National, 25 September 2010: http://www.abc.net.au/rn/allinthemind/stories/2010/3016990.htm. Retrieved 29 June 2011; Hussein S, ‘Brains, Minds, Hearts And Souls’, New Matilda, 20 May 2010: http://newmatilda.com/2010/05/20/brains-minds-hearts-souls. Retrieved 29 June 2011; Turney D, ‘Think again: reinterpreting the brain’, The Sydney Morning Herald, 1 April 2010, 19; ‘Mirror neuron systems offer exciting prospects’, The Hindu, 7 September 2009, 11; Williams D, ‘Mind over mirror’, Time Australia, 30 October 2006, 50-51; Pountney M, ‘Brain secrets take two to untangle’, Herald-Sun, 30 August 2006, 26; ‘Brains are ageing faster’, The Daily Telegraph, 6 April 2006, 13; Williams D, ‘Boosting brain fitness’, Time Australia, 20 February 2006, 57; Miles J, ‘Solving a brain teaser’, Herald-Sun, 25 January 2006, 35; ‘Keep the brain active and repel dementia’, Daily Telegraph, 25 January 2006, 21; Skatssoon J, ‘Many sides to depression’, The Sydney Morning Herald, 25 August 2005, 10.

[17] Wen W, Sachdev P, Li JJ, Chen X, Anstey KJ White matter hyperintensities in the forties: Their prevalence and topography in an epidemiological sample aged 44–48. Human Brain Mapping 2009; 30: 1155-1167; Jorm AF, Anstey KJ, Christensen H, de Plater G, Kumar R, Wen W, Sachdev P. MRI hyperintensities and depressive symptoms in a community sample of 60-64 year olds. Am J Psychiatry 2005; 162:699-704; Kumar R, Parslow RA, Jorm AF, Rosenman SJ, de Plater G, Maller JJ, Meslin C, Anstey KJ, Christensen H, Sachdev PS. Clinical and neuroimaging correlates of mild cognitive impairment in a middle-aged community sample: the PATH through Life 60+ study. Dementia & Geriatric Cognitive Disorders 2006; 21:44-50; Wen W, Sachdev PS, Chen X, Anstey K. Gray matter reduction is correlated with white matter hyperintensity volume: A voxel-based morphometric study in a large epidemiological sample. NeuroImage 2006; 29:1031-1039; Cherbuin N, Windsor TD, Anstey KJ, Maller J, Meslin C, Sachdev PS. Hippocampal volume is positively associated with behavioural inhibition (BIS) in a large community-based sample of mid-life adults: the PATH through life study. Social Cognitive and Affective Neuroscience 2008; 3: 262-269; Cherbuin N, Reglade-Meslin C, Kumar R, Jacomb P, Easteal S, Christensen H, Sachdev P, Anstey KJ. Risk factors of transition from normal cognition to mild cognitive disorder: The PATH through life study. Dementia & Geriatric Cognitive Disorders 2009; 28: 47-55.

[18] Brain and Ageing Research Program, http://psych.med.unsw.edu.au/psychweb.nsf/page/Brainage. Retrieved 4 July 2011; Sachdev PS, Lammel A, Trollor JN, Lee T, Wright MJ, Ames D, Wen W, Martin NG, Brodaty H, Schofield PR, and the OATS Research Team. A comprehensive neuropsychiatric study of elderly twins: The Older Australian Twins Study. Twin Research and Human Genetics 2009; 12:573-582; Sachdev PS, Lee T, Lammel A, Crawford J, Trollor J, Wright M, Brodaty H, Ames D, Martin N. Cognitive functioning in older twins:  The Older Australian Twins Study. Australasian Journal on Ageing 2011 (in press); Lee T, Mosting MA, Henry JD, Trollor JN, Lammel A, Ames D, Martin NG, Wright MJ, Sachdev PS. Genetic Influences on Five Measures of Processing Speed and Their Covariation with General Cognitive Ability in the Elderly: The Older Australian Twins Study. Behavioural Genetics 2011 (in press); Sachdev PS, Brodaty H, Valenzuela MJ, Lorentz L, Looi JCL, Wen W, Zagami A. The neuropsychological profile of vascular cognitive impairment in stroke and TIA patients. Neurology 2004; 62:912-919; Roman GC, Sachdev P, Royall DR, Bullock RA, Orgogozo J-M, Lopezx-Pousa S, Arizaga R, Wallin A. Vascular cognitive disorder:  a new diagnostic category updating vascular cognitive impairment and vascular dementia. [Proceedings of the First Congress of the International Society for Vascular Behavioural and Cognitive Disorders (VAS-COG 2003)]. Journal of Neurological Sciences 2004; 226:81-87; Sachdev P, Valenzuela M, Wang XL, Looi JCL, Brodaty H. Relationship between plasma homocysteine levels and brain atrophy in healthy elderly individuals. Neurology 2002; 58:1539-1541; Wen W, Sachdev P, Shnier R, Brodaty H. Effect of white matter hyperintensities on cortical cerebral blood volume using perfusion MRI. NeuroImage 2004; 21(4):1350-1356; Sachdev P, Wen W, Chen X, Brodaty H. Progression of white matter hyperintensities in elderly individuals over 3 years. Neurology 2007; 68:214-222 ; Withall A, Brodaty H, Altendorf A, Sachdev P. A longitudinal study examining the independence of apathy and depression after stroke: The Sydney Stroke Study. International Psychogeriatrics 2011; 23: 264-273; Brodaty H, Sachdev P, Withall A, Altendorf A, Valenzuela M, Lorentz L. Frequency and clinical, neuropsychological and neuroimaging correlates of apathy following stroke: the Sydney Stroke Study. Psychological Medicine 2005; 35: 1707-1716; Slavin MJ, Brodaty H, Kochan NA, Trollor JN, Draper B, Sachdev PS. Prevalence and predictors of ‘subjective cognitive complaints’ in the Sydney Memory and Ageing Study. American Journal of Geriatric Psychiatry 2010; 18: 701-710.

[19] Neurocognitive Disorders Workgroup, American Psychiatric Association DSM-5 Development, http://www.dsm5.org/MeetUs/Pages/NeurocognitiveDisorders.aspx. Retrieved 4 July 2011.

[20] The Queen's Birthday 2011 Honours List, http://www.gg.gov.au/res/file/2011/honours/qb11/Media%20Notes%20AM%20(M-Z)%20(final).pdf, 68. Retrieved 4 July 2011.

[21] Herbertson L, Rice M, ‘Our Local Heroes Queen’s Birthday Honours 2011’, Wentworth Courier, 15 June 2011, 6; ‘Queen’s Birthday Honours Part 1 of 2’, The Australian, 13 June 2011, 8.

[22] ‘At University of NSW – NSW Scientist of the Year Awards’, Southern Courier, 12/10/2010, 29.

[23] ‘Perminder Singh Sachdev’ in Who’s Who in Australia 2011. Crown Content Pty Ltd; Melbourne, 2010. Accessed on-line: http://crownweb.crowncontent.com.au/ww/. Retrieved 6 July 2011; The Queen's Birthday 2011 Honours List, http://www.gg.gov.au/res/file/2011/honours/qb11/Media%20Notes%20AM%20(M-Z)%20(final).pdf, 68. Retrieved 4 July 2011.

[24] The Queen's Birthday 2011 Honours List, http://www.gg.gov.au/res/file/2011/honours/qb11/Media%20Notes%20AM%20(M-Z)%20(final).pdf, 68. Retrieved 4 July 2011.

[25] Herbertson L, Rice M, ‘Our Local Heroes Queen’s Birthday Honours 2011’, Wentworth Courier, 15 June 2011, 6; ‘Perminder Singh Sachdev’ in Who’s Who in Australia 2011. Crown Content Pty Ltd; Melbourne, 2010. Accessed on-line: http://crownweb.crowncontent.com.au/ww/. Retrieved 6 July 2011.

[26] ‘Perminder Singh Sachdev’ in Who’s Who in Australia 2011. Crown Content Pty Ltd; Melbourne, 2010. Accessed on-line: http://crownweb.crowncontent.com.au/ww/. Retrieved 6 July 2011.

[27] ‘Perminder Singh Sachdev’ in Who’s Who in Australia 2011. Crown Content Pty Ltd; Melbourne, 2010. Accessed on-line: http://crownweb.crowncontent.com.au/ww/. Retrieved 6 July 2011; Current Opinion in Psychiatry Editorial Board, http://journals.lww.com/co-psychiatry/pages/editorialboard.aspx. Retrieved 4 July 2011.

[28] UNSW Research Gateway, http://research.unsw.edu.au/people/scientia-professor-perminder-singh-sachdev/publications. Retrieved 4 July 2011; ‘Perminder S. Sachdev’ in Scopus, http://www.scopus.com/hirsch/author.url?accessor=authorProfile&auidList=7102284091&authorName=Sachdev%2c+Perminder+S.&origin=AuthorProfile&txGid=a6j15ADkhS6B05YtI-83c7G%3a15. Retrieved 5 July 2011.

[29] ‘Perminder S. Sachdev’ in Scopus, http://www.scopus.com/hirsch/author.url?accessor=authorProfile&auidList=7102284091&authorName=Sachdev%2c+Perminder+S.&origin=AuthorProfile&txGid=a6j15ADkhS6B05YtI-83c7G%3a15. Retrieved 5 July 2011. Note Scopus only counts citations for articles produced from 1996 onwards. For additional articles see also: ‘Perminder Sachdev’ in ISI Web of Science Citation Report, http://apps.isiknowledge.com/CitationReport.do?product=WOS&search_mode=CitationReport&SID=S1bbhE3KNHaOfcjA2oN&page=1&cr_pqid=8. Retrieved 5 July 2011. Note Web of Science only includes articles produced from 1992 onwards. Professor Sachdev began publishing articles in 1982.