how to discuss the neurobiology of psychiatric …...how to discuss the neurobiology of psychiatric...
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How to discuss the neurobiology of
psychiatric disorders with our patients
• Jack Nitschke, PhD
• Heather Abercrombie, PhD
• Website with course syllabus & readings:
www.psychiatry.wisc.edu/courses/Nitschke/
2018_bio_psycho_class/
Login: seminar
Password: brain7
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The course is designed to directly
support work with patients
• Expand our repertoire of language, metaphors,
and diagrams for discussions of biology with
patients
• Deepen knowledge of relevant neurobiological
concepts
• Dispel myths and assumptions about the biology
of mental illness
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What are some common conceptions of
biological causes of mental illness?
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• The so-called “Nature vs. Nuture Debate” is
now moot
• We now understand mechanisms through
which our experiences create lasting
neurobiological changes
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Neuroplasticity: What is it?
• Functional & structural neural adaptations to the
environment (Citri & Malenka, 2008)
• Experience-dependent changes in brain function
& structure, related to:
– Learning and acquiring new information
– Adaptive behavioral choices
– Practice & repetition of new behaviors
(Pittenger & Duman, 2008; Kasper &
McEwen, 2008; Tononi & Cirelli, 2006)
• Activity-dependent: “Cells that fire together wire
together” (referred to as Hebb’s law)
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From: http://en.wikipedia.org/wiki/Activity-dependent_plasticity
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Some mechanisms of neuroplasticity
• “Functional” or synaptic plasticity (e.g., long-term potentiation)
• Structural plasticity (e.g., dendritic growth)
• Neurogenesis (mainly in dentate gyrus of hippocampus)
– Proliferation and survival of newborn neurons
– Migration into neural circuits sculpted by
experience
• Experience-induced epigenetic marks
– Long-term changes in gene expression
without changing the DNA
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Functional Plasticity
Structural Plasticity
Neurogenesis
Epigenetics
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Myth: If the disorder is biologically-based, then it must
be treated medically (and behavioral or psychological
treatments are irrelevant)
“The pharmacological effects of antidepressants need to
be combined with psychological rehabilitation to
reorganize networks rendered more plastic by the drug
treatment.”
Karpova et al. (2011) Science.
Alternatives:
-- Psychological treatments are biological treatments
-- Direct and indirect synergism between medical and
psychological treatments
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“The joint use of pharmacological and psychotherapeutic
interventions might be especially successful because of a
potentially interactive and synergistic—not only additive—
effect of the two interventions.
Psychopharmacological treatment may help consolidate the biological changes caused by psychotherapy.”
Eric R. Kandel, M.D., 1998
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Summary
• Psychotherapeutic learning: behavioral sculpting
of new circuits requires practice & repetition
• Many psychotherapies are biologically-informed
behavioral treatments (e.g., Mindfulness, CBT,
IPSRT)
• Synergism between medical & behavioral
treatment:
Many medically-oriented psychiatric
treatments alter neuroplastic mechanisms
(creating the neural conditions upon which
behavioral practice may change the brain)
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Role-plays – We are going to practice!