Catherine J. Harmer

Ketamine attenuates habenula activity in response to aversive outcomes during Pavlovian learning

This study shows ketamine reduces habenula activity during aversive learning in humans, supporting preclinical findings on its antidepressant mechanisms.

Acute and cumulative light exposure differentially influence mood in healthy adults

This study shows that different mood dimensions are linked to light exposure over distinct timescales in healthy adults under naturalistic conditions.

Identifying mood instability and circadian rest-activity patterns using digital remote monitoring and actigraphy in participants at risk for bipolar disorder

The paper assesses mood instability and circadian patterns in individuals at risk for bipolar disorder using digital monitoring and actigraphy over 10 weeks.

Synaptic histamine shapes the neurocomputational dynamics of human learning

This study shows how increased synaptic histamine affects hippocampal dynamics and learning by using a causal probe and analyzing neurocomputational strategies.

Direct serotonin release in humans shapes decision computations within aversive environments

This study uses a selective serotonin releasing agent to examine how increased synaptic serotonin affects decision-making in aversive contexts, finding reduced sensitivity to aversive outcomes and enhanced impulse control.

Beta and theta oscillations track effort and previous reward in human basal ganglia and prefrontal cortex during decision making

The paper examines neural oscillations in human basal ganglia and prefrontal cortex during decision-making tasks, finding distinct roles for beta and theta oscillations in tracking effort and previous reward.

Value-based decision-making between affective memories

The paper investigates how affective memories influence value-based decision-making using reinforcement learning models and shows a positive bias in recall preferences.

Affective biases encoded by the central arousal systems dynamically modulate inequality aversion in human interpersonal negotiations

This study shows that affective biases from central arousal systems modulate inequality aversion in human negotiations, with pupil-linked activity encoding proposer reactions that influence decision-making.

Emotional recognition training modifies neural response to emotional faces but does not improve mood in healthy volunteers with high levels of depressive symptoms

This paper investigates the effects of emotion recognition training on neural responses and mood in individuals with high depressive symptoms, finding neural changes but no mood improvement.

Exploring the prediction of emotional valence and pharmacologic effect across fMRI studies of antidepressants.

The paper uses fMRI data to predict emotional valence and pharmacologic effects of antidepressants, finding consistent emotional valence patterns but inconsistent drug-placebo discrimination.

Prefrontal cortex regulates amygdala response to threat in trait anxiety

This study shows that stimulating the prefrontal cortex reduces amygdala threat reactivity in individuals with high trait anxiety.