Åsa Hammars bilde
Åsa
Hammar
Professor
Besøksadresse: 
Jonas Lies vei 91
5009 BERGEN
Postadresse: 
Postboks 7807
5009 BERGEN
Telefon: 
+47 55 58 62 12
Last ned visittkort

 

Hammar er leder for forskergruppen Bergen Mood and Cognitive Function group (MCF) som har inkludert flere doktorgradskandidater hvor alle jobber med problemstillinger som omhandler alvorlig depresjon, kognitiv fungering og longitudinelle studier. Hammar er prosjektleder for samtlige studier og datainnsamlingen har foregått i tre store hovedstudier. Den første studien er en av litteraturenes lengste oppfølgingsstudier innenfor en pasientgruppe som er rammet av gjentagende depresjoner og denne kartlegger kognitiv fungering over en 10 års periode, og ser blant annet på sammenhengen mellom kognitiv svikt og dagliglivets fungering.  Det andre hovedprosjektet er en longitudinell studie som inkluderte pasienter med gjentagende depresjon og kartla kognitive fungering med både eksperimentelle og standardiserte nevropsykologiske tester, cortisol målinger med deksamethasone og fMRI. Det tredje hovedprosjektet er et av de første på verdens basis som samler inn en pasientgruppe av førstegangs deprimerte pasienter og følger dem over tid. Også her samles inn data om kognitiv fungering, cortisol og emosjonelle informasjonsprosessering. Flere funne er generert fra disse datamaterialene og publisert i internasjonale journaler. Et nytt hovedprosjekt er i gang med å samle inn data fra pasienter som er symptomfrie fra depresjon og i remisjon.  I tillegg er Hammar samarbeidspartner i diverse prosjekt som undersøker barn med autisme, pasienter med angst, bipolare pasienter som mottar ECT behandling, biologiske markører hos ungdommer som overlevet Utøya massakren.

 

 

     

    Tidsskriftartikler
    • Gjerde, Priyanthi Borgen; Schmid, Marit Therese; Hammar, Åsa; Wester, Knut. 2013. Intracranial arachnoid cysts: impairment of higher cognitive functions and postoperative improvement. Journal of Neurodevelopmental Disorders. 5. 10 sider. doi: 10.1186/1866-1955-5-21
    • Hammar, Åsa; Schmid, Marit Therese. 2013. Visual memory performance in patients with major depression: a 9-month follow-up. Applied neuropsychology. 20: 192-196. doi: 10.1080/09084282.2012.670170
    • Hammar, Åsa; Årdal, Guro. 2013. Verbal memory functioning in recurrent depression during partial remission and remission. Frontiers in Psychology. 4. doi: 10.3389/fpsyg.2013.00652
    • Hansson, Pia Berner; Murison, Robert; Lund, Anders; Hammar, Åsa. 2013. Cognitive functioning and cortisol suppression in recurrent major depression. PsyCh Journal. 2: 167-174. doi: 10.1002/pchj.29
    • Hovland, Anders; Pallesen, Ståle; Hammar, Åsa; Hansen, Anita Lill; Thayer, Julian Francis; Sivertsen, Børge; Tarvainen, Mika P.; Nordhus, Inger Hilde. 2013. Subjective sleep quality in relation to inhibition and heart rate variability in patients with panic disorder. Journal of Affective Disorders. 150: 152-155. doi: 10.1016/j.jad.2012.12.017
    • Kessler, Ute; Schøyen, Helle Kristine; Andreassen, Ole Andreas; Eide, Geir Egil; Hammar, Åsa; Malt, Ulrik Fredrik; Ødegaard, Ketil Joachim; Morken, Gunnar; Sundet, Kjetil Søren; Vaaler, Arne Einar. 2013. Neurocognitive profiles in treatment-resistant bipolar I and bipolar II disorder depression. BMC Psychiatry. 13. doi: 10.1186/1471-244X-13-105
    • Schmid, Marit Therese; Hammar, Åsa. 2013. Cognitive function in first episode major depressive disorder: Poor inhibition and semantic fluency performance. Cognitive Neuropsychiatry. 18: 515-530. doi: 10.1080/13546805.2012.754748
    • Schmid, Marit Therese; Hammar, Åsa. 2013. A follow-up study of first episode major depressive disorder. Impairment in inhibition and semantic fluency – potential predictors for relapse? Frontiers in Psychology. 4. doi: 10.3389/fpsyg.2013.00633
    • Strand, Mari; Oram, Mike W.; Hammar, Åsa. 2013. Emotional information processing in major depression remission and partial remission: faces come first. Applied neuropsychology. 20: 110-119. doi: 10.1080/09084282.2012.670159
    • Strand, Mari; Sætrevik, Bjørn; Lund, Anders; Hammar, Åsa. 2013. The relationship between residual symptoms of depression and emotional information processing. Nordic Journal of Psychiatry. 67: 233-239. doi: 10.3109/08039488.2012.711857
    • Årdal, Guro; Lund, Anders; Hammar, Åsa. 2013. Health-related quality of life in recurrent major depressive disorder-A 10-year follow-up study. Nordic Journal of Psychiatry. 67: 339-343. doi: 10.3109/08039488.2012.746730
    • Hammar, Åsa; Kildal, Anna; Schmid, Marit Therese. 2012. Information processing in first episode depression. Scandinavian Journal of Psychology. 53: 445-449. doi: 10.1111/sjop.12012
    • Hammar, Åsa; Kildal, Anna; Schmid, Marit Therese. 2012. Information processing in patients with first episode major depression. Scandinavian Journal of Psychology. 53: 445-449. doi: 10.1111/sjop.12012
    • Hammar, Åsa; Årdal, Guro. 2012. Effortful information processing in patients with major depression - A 10-year follow-up study. Psychiatry Research. 198: 420-423. doi: 10.1016/j.psychres.2011.11.020
    • Hovland, Anders; Pallesen, Ståle; Hammar, Åsa; Hansen, Anita Lill; Thayer, Julian Francis; Tarvainen, Mika P.; Nordhus, Inger Hilde. 2012. The relationships among heart rate variability, executive functions, and clinical variables in patients with panic disorder. International Journal of Psychophysiology. 86: 269-275. doi: 10.1016/j.ijpsycho.2012.10.004
    • Kessler, Ute; Schøyen, Helle Kristine; Andreassen, Ole Andreas; Bergsholm, Per; Eide, Geir Egil; Hammar, Åsa; Malt, Ulrik Fredrik; Ødegaard, Ketil Joachim; Morken, Gunnar; Sundet, Kjetil Søren; Vaaler, Arne. 2012. The neurocognitive profile in depressed therapy resistant bipolar disorder inpatients. Bipolar Disorders. 14: 91-91.
    • Hammar, Åsa; Isaksen, Lise Widding; Schmid, Marit Therese; Årdal, Guro; Strand, Mari. 2011. Patients with major depression show intact memory performance- given optimal conditions. Applied neuropsychology. 18: 191-196. doi: 10.1080/09084282.2011.595445
    • Hammar, Åsa; Strand, Mari; Årdal, Guro; Schmid, Marit Therese; Lund, Anders; Elliott, Rebecca. 2011. Testing the cognitive effort hypothesis of cognitive impairment in major depression. Nordic Journal of Psychiatry. 65: 74-80. doi: 10.3109/08039488.2010.494311
    • Schmid, Marit Therese; Strand, Mari; Årdal, Guro; Lund, Anders; Hammar, Åsa. 2011. Prolonged Impairment in Inhibition and Semantic Fluency in a Follow-up Study of Recurrent Major Depression. Archives of clinical neuropsychology. 26: 677-686. doi: 10.1093/arclin/acr048
    • Årdal, Guro; Hammar, Åsa. 2011. Is impairment in cognitive inhibition in the acute phase of major depression irreversible? Results from a 10-year follow-up study. Psychology and Psychotherapy: Theory, Research and Practice. 84: 141-150. doi: 10.1348/147608310X502328
    • Eichele, Heike; Eichele, Tom; Hammar, Åsa; Freyberger, Harald J.; Hugdahl, Kenneth; Plessen, Kerstin J. 2010. Go/NoGo performance in boys with Tourette Syndrome. Child Neuropsychology. 16: 162-168. doi: 10.1080/09297040903150182
    • Hammar, Åsa; Sørensen, Lin; Årdal, Guro; Ødegaard, Ketil Joachim; Kroken, Rune; Roness, Atle; Lund, Anders. 2010. Enduring cognitive dysfunction in unipolar major depression: A test-retest study using the Stroop paradigm. Scandinavian Journal of Psychology. 51: 304-308. doi: 10.1111/j.1467-9450.2009.00765.x
    • Hammar, Åsa; Årdal, Guro. 2009. Cognitive functioning in major depression - a summary. Frontiers in Human Neuroscience. 3. 7 sider. doi: 10.3389/neuro.09.026.2009
    • Hugdahl, Kenneth; Specht, Karsten; Biringer, Eva Aaker; Weis, Susanne; Elliott, Rebecca; Hammar, Åsa; Ersland, Lars; Lund, Anders. 2007. Increased parietal and frontal activation after remission from recurrent major depression: A repeated fMRI study. Cognitive Therapy and Research. 31: 147-160. doi: 10.1007/s10608-006-9116-8
    • Plessen, Kerstin J.; Lundervold, Arvid; Grüner, Renate; Hammar, Åsa; Lundervold, Astri Johansen; Peterson, Bradley Scott; Hugdahl, Kenneth. 2007. Functional brain asymmetry, attentional modulation, and interhemispheric transfer in boys with Tourette syndrome. Neuropsychologia. 45: 767-774. doi: 10.1016/j.neuropsychologia.2006.08.006
    • Hammar, Åsa. 2006. Et longitudinelt forskningsprosjekt vedrørende alvorlig depresjon og kognitive funksjoner ved Universitetet i Bergen. Nevropsykologi : Medlemsblad for Norsk Nevropsykologisk Forening. 9: 47-49.
    • Plessen, Kerstin Von; Grüner, Renate; Lundervold, Arvid; Hirsch, Jochen G.; Xu, Dongrong; Bansal, Ravi; Hammar, Åsa; Lundervold, Astri Johansen; Wentzel-Larsen, Tore; Lie, Stein Atle; Gass, Achim; Peterson, Bradley Scott; Hugdahl, Kenneth. 2006. Reduced white matter connectivity in the Corpus Callosum of children with Tourette syndrome. Journal of Child Psychology and Psychiatry and Allied Disciplines. 47: 1013-1022. doi: 10.1111/j.1469-7610.2006.01639.x
    • Stordal, Kirsten Irene; Lundervold, Astri Johansen; Mykletun, Arnstein; Asbjørnsen, Arve Egil; Biringer, Eva Aaker; Hammar, Aasa; Hammar, Åsa; Landrø, Nils Inge; Roness, Atle; Rund, Bjørn Rishovd; Sundet, Kjetil; Egeland, Jens; Lund, Anders. 2005. Frequency and characteristics of recurrent major depressed patients with inimpaired executive functions. World Journal of Biological Psychiatry. 6: 36-44.
    • Thomsen, Tormod; Specht, Karsten; Hammar, Åsa; Nyttingnes, Jarle; Ersland, Lars; Hugdahl, Kenneth. 2004. Brain localization of attentional control in different age groups by combining functional and structural MRI. NeuroImage. 22: 912-919.
    • Hammar, Åsa. 2003. Major depression and cognitive dysfunction. An experimental study of the cognitive effort hypothesis. Presentasjon av sammendrag av doktorgradsavhandling. Nevropsykologi : Medlemsblad for Norsk Nevropsykologisk Forening. 6: 18-19.
    • Hammar, Åsa. 2003. Automatic and effortful information processing in unipolar major depression. Scandinavian Journal of Psychology. 44: 409-413.
    • Hammar, Åsa; Lund, Anders; Hugdahl, Kenneth. 2003. Selective impairment in effortful information processing in major depression. Journal of the International Neuropsychological Society. 9: 954-959.
    • Hammar, Åsa; Lund, Anders; Hugdahl, Kenneth. 2003. Long-lasting cognitive impairment in unipolar major depression. A 6 month follow-up study. Psychiatry Research. 118: 189-196.
    • Hammar, Åsa. 2002. Kvinner oftest deprimert. Bergens Tidende. Publisert 2002-08-31.
    • Hammar, Åsa. 2002. Beskrivelse av et undervisningsopplegg for skrivetreningsseminar. UPED-skrift. 2.
    • Svebak, S.; Søndenaa, K.; Hausken, Trygve; Søreide, O.; Hammar, Åsa; Berstad, A. 2000. The significance of personality in pain from gallbladder stones. Scandinavian Journal of Gastroenterology. 7: 759-764.
    • Svebak, Sven; Søndenaa, Karl; Hausken, Trygve; Søreide, Odd; Hammar, Åsa; Berstad, Arnold. 2000. The significance of personality in pain from gallbladder stone. Scandinavian Journal of Gastroenterology. 35: 759-764.
    Rapporter/avhandlinger
    • Hammar, Åsa. 2003. Major depression and cognitive dysfunction - An experimental study of the cognitive effort hypothesis (doktorgradsavhandling).

    Se fullstendig oversikt over publikasjoner i CRIStin.

    List of publications from last five years

     Hammar, Å. & Schmid, M. (2013) Visual memory performance in patients with major depression -a nine months follow- up, Applied Neuropsychology: Adult, 0: 1-5 DOI: 10.1080/09084282.2012.670170

    Schmid, M & Hammar, Å. (2013a) Cognitive function in first episode major depressive disorder: Poor inhibition and semantic fluency performance, Cognitive Neuropsychiatry, DOI:10.1080/13546805.2012.754748

    Hovland, A., Pallesen, S., Hammar, Å Lill-Hansen, A., Thayer, J. F., Sivertsen, B Tarvainen M.P. & Nordhus I. H. (2013) Subjective Sleep Quality in Relation to Inhibition and Heart Rate Variability in patients with Panic Disorder, Journal of Affective Disorders Jan 21. pii: S0165-0327(12)00850-6. doi: 10.1016/j.jad.2012.12.017.

    Hansson, P., Murison, R., Lund, A. & Hammar, Å. (2013) Cognitive inhibition and cortisol in recurrent major depression, PsyCh Journal- DOI: 10.1002/pchj.29

    Kessler, U., Schoeyen, H., Andreassen, O. A., Eide, G.E., Hammar, Å., Malt, U., Oedegaard, K. J., Morken, G., Sundet, K., & Vaaler, A., (2013) Neurocognitive profiles in treatment resistant bipolar I and bipolar II disorder depression. BMC Psychiatry. 2013 Apr 4;13:105. doi: 10.1186/1471-244X-13-105.

    Gjerde, P., B., Schmid, M., Hammar, Å., & Wester, K.,T. (2013) Intracranial arachnoid cysts: impairment of higher cognitive functions and postoperative improvement. Journal of Neurodevelopmental Disorders, 5:21.DOI: 10.1186/1866-1955-5-21

    Schmid, M. & Hammar, Å. (2013b) A follow-up study of first episode major depressive disorder. Impairment in inhibition and semantic fluency – potential predictors for relapse? Frontiers in Psychology, 4, 1-13. Doi: 10.3389/fpsyg.2013.00633

    Hammar, Å., & Årdal, G. (2013) Verbal memory functioning in recurrent depression during partial remission and remission, -Frontiers in Psychology, vol.4 art.665, doi: 10.3389/fpsyg.2013.00652

    Hammar, Å., & Årdal, G. (2012) Effortful information processing in patients with major depression - A 10-year follow-up study. Psychiatry Research 198, 420-423. doi:10.1016/j.psychres.2011.11.020

    Strand , M., Sætrevik, B. Lund, A.  & Hammar, Å.  (2012) The relationship between residual symptoms of depression and emotional information processing, Nord J Psychiatry; Early Online:1–7.

    Strand, M,. Oram, M.W.  & Hammar, Å. (2012) Information processing in Major Depression remission and partial remission: faces come first, Applied Neuropsychology: Adult, 0:1-10 doi: 10.1080/09084282.2012.670159

    Årdal, G, Lund, A. & Hammar, Å. (2012) Health-related quality of life in recurrent major depressive disorder-a 10-year follow-up study Nord J Psychiatry; Early online:1-5,DOI: 10.3109/08039488.2012.746730

    Hammar, Å. Kildal, A. B. & Schmid, M. (2012) Information processing in first episode depression,Scandinavian Journal of Psychology 53, 445–449.

    Hovland, A., Pallesen, S., Hammar, Å., Lill-Hansen, A., Thayer, J. F., Tarvainen M.P. & Nordhus I. H. (2012) The Relationships among Heart Rate Variability, Executive Functions, and Clinical Variables in Patients with Panic Disorder, International Journal of Psychophysiology

    Årdal, G & Hammar, Å. (2011) Is impairment in cognitive inhibition in the acute phase of Major Depression irreversible?  Results from a 10 year follow up study. Psychology and Psychotherapy: Theory, Research and Practice,  84, 141–150. Doi: 10.1348/1 47608310X502328

    Hammar, Å., Strand, M., Årdal, G., Schmid, M., Lund, A. & Elliott, R. (2011) Testing the cognitive effort hypothesis of cognitive impairment in major depression.  Nordic Journal of Psychiatry. Feb;65(1):74-80. Epub 2010 Jun 21., doi: 10.3109/08039488.2010.494311

    Hammar, Å., Isaksen, L., Schmid, M., Årdal, G.,& Strand, M. (2011) MDD patients show intact memory performance when given optimal conditions. Applied Neuropsychology, 18: 191–196, doi: 10.1080/09084282.2011.595445

    Schmid, M., Strand, M., Årdal, G. Lund, A. & Hammar, Å. (2011) Specific impairment in inhibition and semantic fluency in a follow up study of recurrent Major Depression. Archives of Clinical Neuropsychology. Doi:10.1093/arclin/acr048

    Hammar, Å., Sørensen, L., Årdal, G., Ødegaard, K., Kroken, R. , Roness, A.,  & Lund, A. (2010) Enduring cognitive dysfunction in unipolar major depression: A test-retest study using the Stroop-paradigm. Scandinavian Journal of Psychology.  Aug;51(4):304-8. Epub 2009 Dec 23.doi: 10.1111/j.1467-9450.2009.00765x-2009-

    Eichele, H., Eichele, T., Hammar, A., Freyberger, H. J., Hugdahl, K., & Plessen, K. J. (2009). Go/NoGo Performance in Boys with Tourette Syndrome. Child Neuropsychology, 1-7. Doi: 10.1080/09297040903150182

    Hammar, Å. & Årdal, G. (2009). Cognitive functioning in major depression – a summary. Frontier Human Neuroscience 3:26. Doi:10.3389/neuro.09.026.2009

     

     

    Professor i klinisk nevropsykologi. PhD

    Spesialist i klinisk nevropsykologi, (NPF)

    ACADEMIC DEGREE 

    2006                Specialist in Clinical Neuropsychology (NPF)

    2003                PhD/Dr. psychol, Faculty of Psychology, University of Bergen, Norway. Title of thesis: Major depression and cognitive dysfunction- An experimental study of the cognitive effort hypothesis. Supervisor: Professor Kenneth Hugdahl.

    1996                Cand. psychol, Faculty of Psychology, University of Bergen (UiB), Norway 

     

    ACADEMIC AND SCIENTIFIC POSITIONS 

    2012 -              Professor in Clinical neuropsychology, Department of Biological and Medical Psychology (IMBP), UiB, Norway

    2003-               20% Clinical position at The Division of Psychiatry, Haukeland University Hospital

    2003-2012       Associate professor in Clinical neuropsychology, IMBP, UiB, Norway

    2002                Assistant professor, Section for Clinical Neuropsychology, IMBP, UiB, Norway

    1998-1999       Specialpsychologist, Section for Rehabilitation, Neurological Division, Haukeland University Hospital

    1993-1996       50% Research assistant, IMBP, UiB, Norway

    INSTITUTIONAL RESPONSIBILITIES

    2013-2017       Faculty board member, Faculty of Psychology, UiB, Norway

    2013–present   Head of Clinic, Neuropsychological Polyclinic, UiB, Norway

    2011-present     Board Member, MoodNet, Regional Research Network on Mood Disorders, Helse Vest, Norway

    2008-2009       Head of Clinic, Neuropsychological Polyclinic, UIB, Norway

    2006-2008       Faculty board member, Faculty of Psychology, UiB, Norway

    2006-2007       Head of department, IMBP, UiB, Norway

    1999-2006       Member of the Faculty Committee for Research and PhD training, Faculty of Psychology, UiB, Norway

     

     

     

    Prosjekter

    Project Title

    Funding source

    Amount

    (Euros)

    Period

    PI

    Cognitive function and emotional information processing in recurrent MDD- PhD- project 

    The National Program for Integrated Clinical Specialist and PhD-training for Psychologists, Norway

    400 000

    2004-2012

    Hammar

    Major depression, cognitive function and cortisol- including PhD project

    Research Council of Norway

    400 000

    2006-2013

    Hammar

    fMRI study Depression and function

    Helse Vest, Mood Net, Norway

    8 670

    2009

    Hammar

    Cognitive function and emotional information processing in first episode MDD

    Helse Vest, Mood Net, Norway

    48 500

    2011

    Hammar

    Cognitive function in recurrent MDD- a 8-10 year follow up

    Faculty of Psychology, University of Bergen

    8 000

    2008

    Hammar

    Cognitive functioning in first episode MDD patients- a five year follow-up

    Helse Vest, MoodNet

    53 300

    2014-2014

    Hammar

    The neurocognitive profile in remitted MDD patients

    Helse Vest, Mood Net, Strategic funds

     

    46 700

    2012-2014

    Hammar

    Longitudinal studies of major Depression Disorder and cognitive functioning and emotional information processing: predictors for relapse?- PhD project

    Research Council of Norway

    400 000

    2008-2015

    Hammar