As we repeat goal-directed behaviors, these behaviors often become habitual and so routine that we can perform them almost without thinking. This capacity to form habits is very valuable in our normal lives. When we can operate in a habitual mode, we free up cognitive resources. The process by which goal-directed behaviors become habitual has attracted great interest among basic scientists and also among physicians, because when this habit-process goes awry, behavioral problems can emerge. In neuropsychiatric disorders in which repetitive behaviors are predominant symptoms, habit forming may be in overdrive. When we lose the ready facility to form habits, thoughts and actions may lose part of the fundamental organization that normal routines confer on our behavior. The goal of the proposed work is to identify the circuit-level neural mechanisms that underlie this transition from deliberative behavioral performance to a habitual mode of performance in which the behavior continues to be performed without reference to the original goal. It is known that parts of prefrontal cortex and the striatum are necessary for habit formation, but how they act to allow the behavioral shift to habitual behavior still are not understood. We have recorded neural activity in the prefrontal cortex and striatum simultaneously through the entire process of habit formation from early acquisition to the over-training period when the habit becomes ingrained. We have found that as the shift from goal-directed to habitual behavior occurs, there are remarkable changes in the firing patterns of neurons both in different parts of the striatum and in the prefrontal cortex. We now propose experiments to determine how these regions interact and whether there are 'controller'regions by perturbing or silencing individual zones as rats form habits, in order to understand how this network of brain regions bring about shifts between flexible goal-directed behavior and less flexible habitual behavior. Disturbances in the balance between flexibility and fixity of behavior are critical in a number of neurologic and neuropsychiatric disorders ranging from Parkinson's disease to obsessive-compulsive disorder to psychosis. Thus, the experiments proposed are directly related to the mission of the NIMH to understand, prevent and cure mental illness.

Public Health Relevance

We all know that habits are important in our lives but that habits can be a terrible problem both in terms of addiction and medical disorders. Our research is dedicated to the goal of understanding how habits form and how they are controlled by the brain. With this work, we hope to help people with habit-related problems.

Agency
National Institute of Health (NIH)
Institute
National Institute of Mental Health (NIMH)
Type
Research Project (R01)
Project #
2R01MH060379-11
Application #
8293923
Study Section
Sensorimotor Integration Study Section (SMI)
Program Officer
Osborn, Bettina D
Project Start
2000-08-03
Project End
2017-01-31
Budget Start
2012-03-10
Budget End
2013-01-31
Support Year
11
Fiscal Year
2012
Total Cost
$371,726
Indirect Cost
$121,726
Name
Massachusetts Institute of Technology
Department
None
Type
Organized Research Units
DUNS #
001425594
City
Cambridge
State
MA
Country
United States
Zip Code
02139
Schreiweis, Christiane; Bornschein, Ulrich; Burguière, Eric et al. (2014) Humanized Foxp2 accelerates learning by enhancing transitions from declarative to procedural performance. Proc Natl Acad Sci U S A 111:14253-8
Thorn, Catherine A; Graybiel, Ann M (2014) Differential entrainment and learning-related dynamics of spike and local field potential activity in the sensorimotor and associative striatum. J Neurosci 34:2845-59
Atallah, Hisham E; McCool, Andrew D; Howe, Mark W et al. (2014) Neurons in the ventral striatum exhibit cell-type-specific representations of outcome during learning. Neuron 82:1145-56
Smith, Kyle S; Graybiel, Ann M (2014) Investigating habits: strategies, technologies and models. Front Behav Neurosci 8:39
Smith, Kyle S; Graybiel, Ann M (2013) A dual operator view of habitual behavior reflecting cortical and striatal dynamics. Neuron 79:361-74
Howe, Mark W; Tierney, Patrick L; Sandberg, Stefan G et al. (2013) Prolonged dopamine signalling in striatum signals proximity and value of distant rewards. Nature 500:575-9
Smith, Kyle S; Graybiel, Ann M (2013) Using optogenetics to study habits. Brain Res 1511:102-14
Desai, M; Kahn, I; Knoblich, U et al. (2011) Mapping brain networks in awake mice using combined optical neural control and fMRI. J Neurophysiol 105:1393-405
Kahn, Itamar; Desai, Mitul; Knoblich, Ulf et al. (2011) Characterization of the functional MRI response temporal linearity via optical control of neocortical pyramidal neurons. J Neurosci 31:15086-91
Zhao, Shengli; Ting, Jonathan T; Atallah, Hisham E et al. (2011) Cell type–specific channelrhodopsin-2 transgenic mice for optogenetic dissection of neural circuitry function. Nat Methods 8:745-52

Showing the most recent 10 out of 22 publications