Douglas Brenner

Speckle Suppression Through Dual Imaging Polarimetry, and a Ground-Based Image of the HR 4796A Circumstellar Disk (2009)

Hinkley, Sasha, Oppenheimer, Ben R., Soummer, Remi, Brenner, Douglas, Graham, James R., Perrin, Marshall D., ...

We demonstrate the versatility of a dual imaging polarimeter working in tandem with a Lyot coronagraph and Adaptive Optics to suppress the highly static speckle noise pattern--the greatest hindrance...

The Solar-System-Scale Disk Around AB Aurigae (2008)

Oppenheimer, Ben R., Brenner, Douglas, Hinkley, Sasha, Zimmerman, Neil, Sivaramakrishnan, Anand, Soummer, Remi, ...

The young star AB Aurigae is surrounded by a complex combination of gas-rich and dust dominated structures. The inner disk which has not been studied previously at sufficient resolution and imaging...

Temporal Evolution of Coronagraphic Dynamic Range, and Constraints on Companions to Vega (2006)

Hinkley, Sasha, Oppenheimer, Ben R., Soummer, Remi, Sivaramakrishnan, Anand, Roberts Jr., Lewis C., Kuhn, Jeffrey, ...

The major obstacle to the direct detection of companions to nearby stars is the overwhelming brightness of the host star. Current instruments employing the combination of adaptive optics (AO) and...

Evoked Magnetic Fields Reveal Different Visual Areas in Human Cortex, (2002)

Brenner,Douglas, Okada,Yoshio, Maclin,Edward, Williamson,Samuel J., Kaufman,Lloyd

Detailed maps of the patterns of steady state magnetic fields evoked by visual stimuli were constructed from measurements made over the occipital region of the head. The maps indicate the presence of...

Application of a SQUID to Measurement of Somatically Evoked Fields: Transient Responses to Electrical Stimulation of the Median Nerve, (2002)

Okada,Yoshio C., Kaufman,Lloyd, Brenner,Douglas, Williamson,Samuel J.

Magnetic field measurements have detected and localized transient neural activity evoked in the primary somatosensory projection area of the cortex following stimulation of the medial nerve....

Laser Doppler Experiments. (1998)

Shultz, T., Brenner, Douglas, Elbaum, Marek, Greenebaum, Michael, Lind, George

This document constitutes the Final Report on Contract N0001 4-90-C-0214/P00001, Relative Merits of Innovative Imaging Sensor Systems, and covers the period 18 January 1991 through 12 April 1992. The...