G Hajak

Summary

Affiliation: University of Regensburg
Country: Germany

Publications

  1. ncbi Abuse and dependence potential for the non-benzodiazepine hypnotics zolpidem and zopiclone: a review of case reports and epidemiological data
    G Hajak
    Department of Psychiatry and Psychotherapy, University of Regensburg, Germany
    Addiction 98:1371-8. 2003
  2. ncbi Continuous versus non-nightly use of zolpidem in chronic insomnia: results of a large-scale, double-blind, randomized, outpatient study
    G Hajak
    Department of Psychiatry and Psychotherapy, University of Regensburg, Germany
    Int Clin Psychopharmacol 17:9-17. 2002
  3. ncbi The challenge of chronic insomnia: is non-nightly hypnotic treatment a feasible alternative?
    G Hajak
    Department of Psychiatry and Psychotherapy, University of Regensburg, Universitatsstrasse 84, 93053 Regensburg, Germany
    Eur Psychiatry 18:201-8. 2003
  4. ncbi "As needed" pharmacotherapy combined with stimulus control treatment in chronic insomnia--assessment of a novel intervention strategy in a primary care setting
    Goran Hajak
    Department of Psychiatry and Psychotherapy, University of Regensburg, Germany
    Ann Clin Psychiatry 14:1-7. 2002
  5. ncbi Zolpidem "as needed" versus continuous administration: Pan-European study results
    Goran Hajak
    Department of Psychiatry and Psychotherapy, University of Regensburg, Germany
    Sleep Med Rev 6:S21-8; discussion S31-3. 2002
  6. ncbi Doxepin in the treatment of primary insomnia: a placebo-controlled, double-blind, polysomnographic study
    G Hajak
    Department of Psychiatry and Psychotherapy, , Germany
    J Clin Psychiatry 62:453-63. 2001
  7. ncbi rTMS for the treatment of tinnitus: the role of neuronavigation for coil positioning
    B Langguth
    Department of Psychiatry and Psychotherapy, University of Regensburg, Universitaetsstrasse 84, 93053 Regensburg, Germany
    Neurophysiol Clin 40:45-58. 2010
  8. ncbi The sleep-improving effects of doxepin are paralleled by a normalized plasma cortisol secretion in primary insomnia. A placebo-controlled, double-blind, randomized, cross-over study followed by an open treatment over 3 weeks
    A Rodenbeck
    Department of Psychiatry and Psychotherapy, University of Gottingen, Von Siebold Strasse 5, 37075 Gottingen, Germany
    Psychopharmacology (Berl) 170:423-8. 2003
  9. ncbi Left temporal low-frequency rTMS for the treatment of tinnitus: clinical predictors of treatment outcome--a retrospective study
    G Frank
    Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany
    Eur J Neurol 17:951-6. 2010
  10. ncbi Cognitive and neurobiological alterations in electromagnetic hypersensitive patients: results of a case-control study
    M Landgrebe
    Department of Psychiatry, Psychosomatics, and Psychotherapy, University of Regensburg, Regensburg, Germany
    Psychol Med 38:1781-91. 2008

Detail Information

Publications27

  1. ncbi Abuse and dependence potential for the non-benzodiazepine hypnotics zolpidem and zopiclone: a review of case reports and epidemiological data
    G Hajak
    Department of Psychiatry and Psychotherapy, University of Regensburg, Germany
    Addiction 98:1371-8. 2003
    ..To substantiate and re-evaluate this situation, the world literature was reviewed for cases of dependence of both agents; these cases were analysed in order to identify certain underlying patterns, if evident...
  2. ncbi Continuous versus non-nightly use of zolpidem in chronic insomnia: results of a large-scale, double-blind, randomized, outpatient study
    G Hajak
    Department of Psychiatry and Psychotherapy, University of Regensburg, Germany
    Int Clin Psychopharmacol 17:9-17. 2002
    ..Non-nightly zolpidem appears to be a feasible and safe additional option for the management of chronic insomnia...
  3. ncbi The challenge of chronic insomnia: is non-nightly hypnotic treatment a feasible alternative?
    G Hajak
    Department of Psychiatry and Psychotherapy, University of Regensburg, Universitatsstrasse 84, 93053 Regensburg, Germany
    Eur Psychiatry 18:201-8. 2003
    ..Published results show effective treatment of insomnia without any evidence of either adverse event associated with a discontinuous regimen or increased hypnotic use over the treatment period...
  4. ncbi "As needed" pharmacotherapy combined with stimulus control treatment in chronic insomnia--assessment of a novel intervention strategy in a primary care setting
    Goran Hajak
    Department of Psychiatry and Psychotherapy, University of Regensburg, Germany
    Ann Clin Psychiatry 14:1-7. 2002
    ..Further research is warranted on the contributions of both treatment components to effectiveness and on the efficacy and safety issues of long-term use...
  5. ncbi Zolpidem "as needed" versus continuous administration: Pan-European study results
    Goran Hajak
    Department of Psychiatry and Psychotherapy, University of Regensburg, Germany
    Sleep Med Rev 6:S21-8; discussion S31-3. 2002
  6. ncbi Doxepin in the treatment of primary insomnia: a placebo-controlled, double-blind, polysomnographic study
    G Hajak
    Department of Psychiatry and Psychotherapy, , Germany
    J Clin Psychiatry 62:453-63. 2001
    ....
  7. ncbi rTMS for the treatment of tinnitus: the role of neuronavigation for coil positioning
    B Langguth
    Department of Psychiatry and Psychotherapy, University of Regensburg, Universitaetsstrasse 84, 93053 Regensburg, Germany
    Neurophysiol Clin 40:45-58. 2010
    ....
  8. ncbi The sleep-improving effects of doxepin are paralleled by a normalized plasma cortisol secretion in primary insomnia. A placebo-controlled, double-blind, randomized, cross-over study followed by an open treatment over 3 weeks
    A Rodenbeck
    Department of Psychiatry and Psychotherapy, University of Gottingen, Von Siebold Strasse 5, 37075 Gottingen, Germany
    Psychopharmacology (Berl) 170:423-8. 2003
    ....
  9. ncbi Left temporal low-frequency rTMS for the treatment of tinnitus: clinical predictors of treatment outcome--a retrospective study
    G Frank
    Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany
    Eur J Neurol 17:951-6. 2010
    ..However, treatment results are characterized by high interindividual variability. Therefore, the identification of predictors for treatment response is of high clinical relevance...
  10. ncbi Cognitive and neurobiological alterations in electromagnetic hypersensitive patients: results of a case-control study
    M Landgrebe
    Department of Psychiatry, Psychosomatics, and Psychotherapy, University of Regensburg, Regensburg, Germany
    Psychol Med 38:1781-91. 2008
    ....
  11. ncbi Modulating cerebello-thalamocortical pathways by neuronavigated cerebellar repetitive transcranial stimulation (rTMS)
    B Langguth
    Department of Psychiatry, Psychosomatics and Psychotherapy, University of Regensburg, Universitaetsstrasse, 84, 93053 Regensburg, Germany
    Neurophysiol Clin 38:289-95. 2008
    ..This study explores the effects of cerebellar repetitive transcranial magnetic stimulation (rTMS) on cerebello-thalamocortical pathways...
  12. ncbi TMS for treatment of chronic tinnitus: neurobiological effects
    P Eichhammer
    Department of Psychiatry, University of Regensburg, Universitaetsstrasse 84, 93053, Regensburg, Germany
    Prog Brain Res 166:369-75. 2007
    ..All other signs of cortical excitability that we studied remained unchanged. These findings suggest, that low frequency rTMS may evoke long-term depression (LTD)-like effects resulting in enhancement of subcortical inhibition...
  13. ncbi Neuroendocrine dysregulation in primary insomnia
    A Rodenbeck
    Department of Psychiatry and Psychotherapy, Georg August University of Gottingen, Von Siebold Str 5, 37075 Gottingen, Germany
    Rev Neurol (Paris) 157:S57-61. 2001
    ..Taken together, the neuroendocrine dysregulation seems to be more expressed in chronic insomnia than in acute insomnia and may be a contributing factor in maintaining disturbed sleep...
  14. ncbi Decreased sleep quality and increased sleep related movements in patients with Tourette's syndrome
    S Cohrs
    Department of Psychiatry and Psychotherapy, von Sieboldstrasse 5, 37075 Goettingen, Germany
    J Neurol Neurosurg Psychiatry 70:192-7. 2001
    ....
  15. ncbi Epidemiology of severe insomnia and its consequences in Germany
    G Hajak
    Department of Psychiatry and Psychotherapy, University of Regensburg, Germany
    Eur Arch Psychiatry Clin Neurosci 251:49-56. 2001
    ....
  16. ncbi Tinnitus severity, depression, and the big five personality traits
    B Langguth
    Department of Psychiatry, University of Regensburg, Regensburg, Germany
    Prog Brain Res 166:221-5. 2007
    ..001) and TQ scores (p=.028), but not with THI ratings (n.s.). In addition to confirming the established roles of trait anxiety and depression, low 'Agreeableness' was thus identified as a novel predictor of tinnitus severity on the THI...
  17. ncbi Effects of acupuncture needle penetration on motor system excitability
    M Zunhammer
    Department of Psychiatry, University of Regensburg, Universitaetsstrae 84, 93053 Regensburg, Germany
    Neurophysiol Clin 42:225-30. 2012
    ..The present study aimed at exploring effects of deep manual acupuncture needling compared to a state-of-the-art, non-penetrating control condition on several standard TMS measures of motor system excitability...
  18. ncbi Functional imaging of chronic tinnitus: the use of positron emission tomography
    P Eichhammer
    Department of Psychiatry, University of Regensburg, Universitaetsstrasse 84, 93053, Regensburg, Germany
    Prog Brain Res 166:83-8. 2007
    ..PET studies that map distinct neurochemical pathways and receptors by the use of specific ligands may in the future provide new possibilities for pharmacologically based treatment of some forms of tinnitus...
  19. ncbi Suprathreshold repetitive transcranial magnetic stimulation elevates thyroid-stimulating hormone in healthy male subjects
    S Cohrs
    Department of Psychiatry and Psychotherapy, Georg-August University, , Germany
    J Nerv Ment Dis 189:393-7. 2001
    ..The more pronounced effect of suprathreshold rTMS on TSH plasma levels might be important for the determination of optimal stimulation parameters in the treatment of depressed patients...
  20. ncbi Separation anxiety and actual separation experiences during childhood in patients with panic disorder
    B Bandelow
    Department of Psychiatry and Psychotherapy, University of Gottingen, Germany
    Can J Psychiatry 46:948-52. 2001
    ..The association between separation anxiety in childhood and actual separation experiences during childhood has not yet been investigated in patients with panic disorder...
  21. ncbi Positron emission tomography findings in obstructive sleep apnea patients with residual sleepiness treated with continuous positive airway pressure
    J Antczak
    Sleep Disorders and Research Centre, Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany
    J Physiol Pharmacol 58:25-35. 2007
    ..Abnormal PET findings were concentrated in frontal area (found in 4 patients). The frontal abnormality seems to distinguish the OSAS patients with UPS from the whole OSAS population, examined in previous studies...
  22. ncbi Repetitive transcranial magnetic stimulation for the treatment of negative symptoms in residual schizophrenia: rationale and design of a sham-controlled, randomized multicenter study
    Joachim Cordes
    Department of Psychiatry and Psychotherapy, Heinrich Heine University of Dusseldorf, Bergische Landstr 2, 40629 Düsseldorf, Germany
    Eur Arch Psychiatry Clin Neurosci 259:S189-97. 2009
    ..Main limitations of the trial are the potential influence of antipsychotic dosage changes and the difficulty to ensure adequate blinding...
  23. ncbi Trimipramine in primary insomnia: results of a polysomnographic double-blind controlled study
    D Riemann
    Department of Psychiatry and Psychotherapy, University of Freiburg, Germany
    Pharmacopsychiatry 35:165-74. 2002
    ..However, due to the large intra- and interindividual variance in the parameters of interest before and during treatment a larger sample size would have been necessary to strengthen the validity of our findings...
  24. ncbi Berry anthocyanins and anthocyanidins exhibit distinct affinities for the efflux transporters BCRP and MDR1
    A Dreiseitel
    Department of Psychiatry, University of Regensburg, Regensburg, Germany
    Br J Pharmacol 158:1942-50. 2009
    ..Specifically, the role played by transport mechanisms at the intestinal and blood-brain barriers (BBB) is currently unknown...
  25. ncbi Consensus for tinnitus patient assessment and treatment outcome measurement: Tinnitus Research Initiative meeting, Regensburg, July 2006
    B Langguth
    Department of Psychiatry, University of Regensburg, Regensburg, Germany
    Prog Brain Res 166:525-36. 2007
    ..It is hoped that this will contribute towards better cooperation between research centres in finding and evaluating treatments for tinnitus by allowing better comparability between studies...
  26. ncbi Clioquinol treatment in familiar early onset of Alzheimer's disease: a case report
    B Ibach
    Department of Psychiatry and Psychotherapy, University of Regensburg, Universitatsstrasse 84, Regensburg, Germany
    Pharmacopsychiatry 38:178-9. 2005
    ..In one case CSF-tau and beta-Amyloid (42/40) concentrations changed during CQ treatment...
  27. ncbi High-frequency repetitive transcranial magnetic stimulation in schizophrenia: a combined treatment and neuroimaging study
    G Hajak
    Department of Psychiatry and Psychotherapy, University of Regensburg, Regensburg, Germany
    Psychol Med 34:1157-63. 2004
    ..In this context, disentangling of negative and depressive symptoms is of the utmost importance when understanding specific rTMS effects on schizophrenic symptoms...