Gabriela Ojeda Valencia

Electrical perturbation reveals a directional architecture for communication across human visual streams

The paper uses electrical stimulation to map directional connectivity in human visual cortex, revealing an asymmetric architecture of interareal influence.

Single pulse electrical stimulation in white matter modulates iEEG visual responses in human early visual cortex

This study shows that single electrical pulses in white matter modulate visual evoked potentials but not broadband responses, suggesting additive noise effects and enhanced visual input synchrony.

Parameterization of intraoperative human microelectroderecordings: Linking action potential morphology to brainanatomy

The paper introduces a method to parameterize and cluster single-unit action potentials from DBS microelectrode recordings to improve lead placement in deep brain stimulation.

ER-detect: a pipeline for robust detection of early evoked responses in BIDS-iEEG electrical stimulation data

ER-detect automates the detection of early evoked responses in iEEG data, achieving performance comparable to inter-rater reliability.

Signatures of electrical stimulation driven network interactions in the human limbic system

The paper identifies unique stimulation-evoked waveforms in distinct limbic subsystems using intracranial recordings, suggesting potential biomarkers for limbic network function.

Canonical Response Parameterization: Quantifying the structure of responses to single-pulse intracranial electrical brain stimulation

This paper introduces a method to quantify and compare brain stimulation response shapes using canonical response parameterization, enabling statistical analysis of single-pulse intracranial electrical stimulation data.

Electrical stimulation of temporal and limbic circuitry produces distinct responses in human ventral temporal cortex

This study uses electrical stimulation to identify distinct electrophysiological responses in the human ventral temporal cortex, revealing different input connectivity profiles from cortical and limbic regions.

Homunculus Interruptus: A motor association area in the depth of the central sulcus

The paper identifies a motor association area in the central sulcus that interrupts the topological map of body movements generated by the precentral gyrus.

Typical somatomotor physiology of the hand is preserved in a patient with an amputated arm

The paper investigates motor cortex electrophysiology in an amputee, finding preserved hand representations and high decoding accuracy for finger movements.