The response properties of neurons to sensory stimuli have been used to identify their receptive fields and to functionally map sensory systems. In primary visual cortex, most neurons are selective to a particular orientation and spatial frequency of the visual stimulus. Using two-photon calcium imaging of neuronal populations from the primary visual cortex of mice, we have characterized the re...

PURPOSE To investigate the use of asymmetric collimators and a single isocenter for delivering a uniform, accurate dose of radiation to the head, neck, and supraclavicular lymph nodes. METHODS AND MATERIALS A linear accelerator with a pair of asymmetric collimators is required for this technique. An isocenter was placed at the junction of the lateral head and neck fields and the anterior supr...

Authentication protocols are indispensable in wireless sensor networks. Commonly they are based on asymmetric cryptographic algorithms. In this paper we investigate all categories of finite fields suitable for elliptic curve cryptography on the ATmega128 microcontroller: Fp, F2d , and Fpd . It turns out that binary fields enable the most efficient implementations.

activity corresponding to a series of shuttle runs across a square arena, heteroassociative connections between activated place cells become potentiated, cells with overlapping place fields develop strong bidirectional connections and asymmetric connections between cells against the direction of motion become depressed. The elevated connectivity of the activated ensemble resembles the broad dev...

We theoretically demonstrate a scheme for tomographic reconstruction of asymmetric molecular orbitals based on high-order harmonic generation with a two-color multicycle laser field. It is shown that by adjusting the relative phase of the two fields, the returning electrons can be forced to recollide from one direction for all the orientations of molecules. Thus, the reconstruction of the asymm...

1. Asymmetric Volume Coils Asymmetric, noncircular volume coils are required in situations where the available access bore is noncircular in cross section, such as for table-top applications [1] or where the gradient bore is noncircular [2]. They consist of ladder network resonators such as the birdcage [3] or TEM [4] coil that have been modified by placing their rungs on a cylindrical surface ...