Laboratory for Cognition and Neural Stimulation

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Research Studies


Non-invasive brain stimulation studies

TMS Neglect

Hemispatial neglect refers to the defective ability of patients to explore or act upon the side of space contralateral to the lesion and to attend to stimuli presented in that portion of space. We are currently using TMS to investigate the neural instantiation of multiple spatial attention mechanisms in healthy participants.

tDCS Neglect

Hemispatial neglect refers to the defective ability of patients to explore or act upon the side of space contralateral to the lesion and to attend to stimuli presented in that portion of space. We are currently exploring the possible beneficial effects of tDCS for patients who have developed hemispatial neglect as the result of a stroke.

TMS Aphasia

Aphasia is a condition characterized by impairment of the ability to communicate that occurs frequently after stroke. The LCNS is conducting a research study of the effectiveness of Transcranial Magnetic Stimulation (TMS) in improving symptoms of aphasia after stroke. This technique has been shown to provide limited but sustained improvement in naming tasks after repeated sessions. Potential participants should be between the ages of 18 and 75 years of age, and have suffered a single stroke on the left side of the brain 6 months prior to participation.

tDCS Aphasia

Aphasia is a condition characterized by impairment of the ability to communicate that occurs frequently after stroke. The LCNS is conducting a research study of the effectiveness of Transcranial Direct Current Stimulation (tDCS) in improving symptoms of aphasia after stroke. We are currently exploring the possible beneficial effects of tDCS for patients who have developed hemispatial neglect as the result of a stroke.

tDCS Alzheimer's

Dr. Wolk and the Penn Institute of Aging are study the effect of transcranial direct current stimulation (tDCS) on memory performance in aging and Alzheimers Disease. tDCS involves the application of weak currents to the scalp which modulates the underlying cortical activity. By stimulating or inhibiting different brain regions, Dr. Wolk hopes to learn more about the underlying neural substrates supporting episodic memory and the functional changes that occur with aging.

TMS Motor

We are currently investigating the effect of Transcranial Magnetic Stimulation on motor processing and propioception.

TMS Timing

We are interested in which parts of the brain are responsible for time perception. To this end, we are conducting a TMS study in which participants compare time intervals to determine which is shorter or longer. Then they undergo TMS, and then do the comparisons again. This will help us to determine where in the brain time is computed.


Cognitive & Behavioral Studies
  • Investigations of motor and proprioception
  • Investigations of language
  • Investigations of memory
  • Investigations of visual spatial processing
  • Investigations of multi-sensory integration (sight & sound)