Alexander Paul Leff

Neurotransmitter circuits of the human language network and their disruption in post-stroke aphasia

This study maps the neurotransmitter architecture of the human language network and identifies neurochemical disruptions in post-stroke aphasia, suggesting potential for personalized pharmacological strategies.

Neural patterns of conscious visual awareness in the Riddoch syndrome

This study investigates the neural basis of conscious visual awareness in Riddoch syndrome using multimodal MRI, finding that V5 activity correlates with conscious perception of motion in blind fields.

Systematic evaluation of high level visual deficits and lesions in posterior cerebral artery stroke

This study evaluates visual deficits and lesion patterns in posterior cerebral artery stroke using a large cohort, finding mixed deficits and bilateral involvement in visual processing.

Lesion site and therapy time predict responses to a therapy for anomia after stroke: a prognostic model development study

This study develops a prognostic model predicting treatment response for anomia after stroke using lesion location and therapy time.

Mapping language and non-language cognitive deficits in post-stroke anomic aphasia

This study investigates brain-behavior relationships in post-stroke anomic aphasia, finding that higher-order cognitive functions, not just language-specific areas, are linked to language production deficits.

Modulating the left inferior frontal cortex by task domain, cognitive challenge and tDCS

This study investigates how task domain, cognitive challenge, and tDCS modulate activity in the left inferior frontal cortex using fMRI and neuromodulation data.

Recovery after stroke: not so proportional after all?

The paper challenges the proportional recovery rule by showing that baseline score correlations can mislead about outcome predictability in stroke recovery.