Welcome to the Lerner Lab

We study the neural circuit basis of motivation, reinforcement learning, and decision-making. We are particularly interested in the circuits driving the release of dopamine, a neurotransmitter at the heart of addiction, depression, Parkinson’s disease, and many other neuropsychiatric disorders.

Welcome to the Lerner Lab

We study the neural circuit basis of motivation, reinforcement learning, and decision-making. We are particularly interested in the circuits driving the release of dopamine, a neurotransmitter at the heart of addiction, depression, Parkinson’s disease, and many other neuropsychiatric disorders.

1.

Research focus

How differences in dopamine circuits shape motivation and learning.

2.

Approaches

Behavior, optogenetics, photometry, imaging, electrophysiology, and sequencing.

3.

Translation

Toward better treatments for addiction, depression, and Parkinson’s disease.

We thank the following organizations for funding our research

Dopamine subcircuits

Dopamine is not one system but many. We study the computational roles of distinct dopamine subcircuits in reinforcement learning, decision-making, and habit formation.

Fiber photometry of dopamine signals during behavior.

Circuit architecture of striatonigrostriatal loops.

Individual differences in compulsive reward seeking.

Dopamine subcircuits

Dopamine is not one system but many. We study the computational roles of distinct dopamine subcircuits in reinforcement learning, decision-making, and habit formation.

Fiber photometry of dopamine signals during behavior.

Circuit architecture of striatonigrostriatal loops.

Individual differences in compulsive reward seeking.

Stress and dopamine

A properly functioning dopamine system is vital for mental health. We examine how stress, from early development through adulthood, reshapes dopamine circuit structure and function.

Developmental stress and dopamine circuit wiring.

Stress hormone signaling in adult dopamine function.

Sex-specific mechanisms of stress.

Stress and dopamine

A properly functioning dopamine system is vital for mental health. We examine how stress, from early development through adulthood, reshapes dopamine circuit structure and function.

Developmental stress and dopamine circuit wiring.

Stress hormone signaling in adult dopamine function.

Sex-specific mechanisms of stress.

Parkinsonian neurodegeneration

Parkinson’s disease targets dopamine neurons. We study how their gradual loss alters specific, interacting dopamine subcircuits, focusing on the earliest stages of disease.

Alpha-synuclein overexpression models in mice.

Dopamine neuron heterogeneity across disease progression.

Toward earlier detection and better treatments.

Parkinsonian neurodegeneration

Parkinson’s disease targets dopamine neurons. We study how their gradual loss alters specific, interacting dopamine subcircuits, focusing on the earliest stages of disease.

Alpha-synuclein overexpression models in mice.

Dopamine neuron heterogeneity across disease progression.

Toward earlier detection and better treatments.

Fluorescence microscopy image of dopamine neurons
Fluorescence microscopy image of dopamine neurons
Midbrain dopamine neurons labeled in cyan, with neurons overexpressing alpha-synuclein in red

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Dopamine subcircuits

Dopamine is not one system but many. We study the computational roles of distinct dopamine subcircuits in reinforcement learning, decision-making, and habit formation.

Fiber photometry of dopamine signals during behavior.

Circuit architecture of striatonigrostriatal loops.

Individual differences in compulsive reward seeking.

Basic science, translational impact.

15

Current lab members

28

Lab alumni

33

Publications and preprints

2017

Lab founded

The people behind the science

Talia Lerner
Talia Lerner
Ryan Kovaleski
Ryan Kovaleski
Briana Hryhorysak
Briana Hryhorysak
Laia Castell
Laia Castell
Venus Sherathiya
Venus Sherathiya
ManHua Zhu
ManHua Zhu
Bita Firouzan
Bita Firouzan
Carine Lampert
Carine Lampert
Nkatha Mwenda
Nkatha Mwenda
Jacob Nadel
Jacob Nadel
Evan Swanson
Evan Swanson
Lorena Monroy
Lorena Monroy
Ray Yu
Ray Yu
Elisha Mwesigwa
Elisha Mwesigwa
Ila Gordon
Ila Gordon

Joining the lab

Thinking about joining? Here is where things stand right now. Full details are on the Join Us page.

Are you accepting postdocs?

Not at this time. You may inquire if you are interested in a position starting in 2028 or later. We are especially interested in experience with slice or in vivo electrophysiology, in vivo 2-photon or miniscope imaging, and computational approaches.

Are you accepting graduate students?

The Lerner Lab plans to accept graduate students beginning in Fall 2028. Students will be admitted through the University of Toronto (Pharmacology, Physiology, or IMS). Please inquire if interested.

Can undergraduates join the lab?

Not until further notice. New undergraduates will be admitted to the lab after our move to the Temerty Discovery Centre located at the CAMH Queen Street Campus. Undergraduates will need to commit to at least 10 hours per week of in-person time at this site.

Are there research technician positions?

The Lerner Lab will be hiring 2-3 research technicians beginning in 2028. Research technicians will have completed an undergraduate degree in a relevant discipline and have a strong interest in pursuing graduate level research.

Are you accepting postdocs?

Not at this time. You may inquire if you are interested in a position starting in 2028 or later. We are especially interested in experience with slice or in vivo electrophysiology, in vivo 2-photon or miniscope imaging, and computational approaches.

Are you accepting graduate students?

The Lerner Lab plans to accept graduate students beginning in Fall 2028. Students will be admitted through the University of Toronto (Pharmacology, Physiology, or IMS). Please inquire if interested.

Can undergraduates join the lab?

Not until further notice. New undergraduates will be admitted to the lab after our move to the Temerty Discovery Centre located at the CAMH Queen Street Campus. Undergraduates will need to commit to at least 10 hours per week of in-person time at this site.

Are there research technician positions?

The Lerner Lab will be hiring 2-3 research technicians beginning in 2028. Research technicians will have completed an undergraduate degree in a relevant discipline and have a strong interest in pursuing graduate level research.

Join the Lerner Lab

Centre for Addiction and Mental Health, Toronto, Ontario

UNIVERSITY OF TORONTO

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