There are 4 studies that match your criteria.
Criteria: Freq Range=300 kHz - 300 GHz (RF/mmW/THz),Study Type=Human / Provocation,Study Subtype=Cognitive Function & Memory,Status=Ongoing

Details - Project ID 1182
Lab
Study Design	380-400 MHz (Tetra) and 2 GHz (UMTS) exposure to humans and effects on cognitive function, brain activity, and feelings of well-being
Summary	Effects of Pulsed Electromagnetic Fields (EMF) Produced by Modified Commercial Mobile Telephone TETRA (380 - 400 MHz) and UMTS (2 GHz) on Human Mental Performance and Bioelectrical Brain Activity
Citation
Details - Project ID 1185
Lab	Fraunhofer Institut, Hanover, FRG
Study Design	2 GHz (UMTS) exposure to humans and analysis of cognitive function
Summary	Experimental Study on Potential Interaction of the 3rd Generation Mobile Telecommunication System (UMTS) with Biological Systems for the Health Risk Assessment of Humans
Citation
Details - Project ID 1235
Lab	National Institute for Working Life, Sweden
Study Design	900 MHz (GSM) exposure to self-reported hypersensitive people and analysis of cognitive function and memory effects
Summary	Neurophysiologic Investigation of Mobile Phone RF Exposure on People Reporting Subjective Symptoms (Hypersensitivity)
Citation
Details - Project ID 1762
Lab	University of Helsinki, Finland
Study Design	Mobile phone use and cognitive effects
Summary
Citation