Richard J. Krauzlis

Neuronal processing of facial expressions in the primate superior colliculus

The paper identifies two distinct neuron groups in the primate superior colliculus with different latency responses to facial expressions of threat and fear.

Cholinergic-dependent dopamine signals in mouse dorsomedial striatum are regulated by frontal but not sensory cortices

The paper shows that visual stimuli evoke dopamine in the dorsomedial striatum via cholinergic-dependent mechanisms, driven by frontal cortices rather than sensory cortices.

Parallel basal ganglia and frontal cortical outputs differentially encode context-dependent evaluation and categorical commitment during choice

The paper shows that SNr and FEF encode different aspects of decision-making: SNr reflects ordinal rank, while FEF reflects categorical commitment, supporting a division of labor in neural circuits.

Visual activity in primate superior colliculus requires geniculostriate input

This study shows that visually evoked spiking in primate superior colliculus depends on retinal signals through LGN and V1, not direct retinal input.

Beyond the Brake: the Subthalamic Nucleus Predominantly Facilitates Action in Non-human Primates

This study identifies three functionally distinct STN neuron populations in macaques during a value-based task, showing that two primarily encode stimulus value and precede GPe activity.

A distinct circuit for biasing visual perceptual decisions and modulating superior colliculus activity through the mouse posterior striatum

The paper shows that the posterior striatum in mice controls visual decisions through a distinct pathway, influencing superior colliculus activity differently than the dorsomedial striatum.

Short-latency preference for faces in the primate superior colliculus

The paper shows that primate superior colliculus neurons rapidly detect faces with 80% accuracy within 50ms, relying on early visual cortex signals.

Correlated variability in primate superior colliculus depends on functional class

The paper examines correlated variability in primate superior colliculus neurons and finds it varies by functional class during a saccade task.

Neuronal modulation in the mouse superior colliculus during covert visual selective attention

This study investigates how neuronal activity in the mouse superior colliculus is modulated during covert visual attention, finding that spatial cues enhance activity at cued locations and improve discriminability between contralateral and ipsilateral neurons.

Microsaccades as a marker not a cause for attention-related modulation

This study investigates whether microsaccades are a cause or marker of attention-related modulation in the superior colliculus, finding that modulation occurs independently of microsaccades.

Attention-related modulation of caudate neurons depends on superior colliculus activity

This study shows that superior colliculus inactivation affects attention-related modulation of caudate neurons in a side-specific manner during a spatial attention task.

Midbrain activity supports high-level visual properties in primate temporal cortex

The paper shows that the superior colliculus influences high-level visual processing in primate temporal cortex by affecting attention and object selectivity.

Spatial neglect is causally linked to an attention-related area in macaque temporal cortex

The paper identifies a mid-STS region in macaques as causally linked to spatial neglect through fMRI and inactivation experiments.

Covert spatial selection in primate basal ganglia

The paper shows that caudate nucleus neurons in primates select spatial locations during a covert attention task without overt movement.