Gamma band

Engleman R Jr, Rouse P E, Peek H M and Biamonte V D 1970 Beta and gamma band systems of nitric oxide Los Aiamos Scientific Laboratory Report no LA-4364... 

Light GA, Hsu JL, Hsieh MH, Meyer-Gomes K, Sprock J, et al. 2006. Gamma band oscillations reveal neural network cortical coherence dysfunction in schizophrenia patients. Biol Psychiatry 60 1231-1240. 

Neural oscillations have also been examined in EEG studies in schizophrenia (for reviews see Javitt et al., 2008 Uhlhaas et al., 2008). Gamma band (>30 Hz) measures have been of particular interest in schizophrenia, because they have been proposed to mediate perceptual feature binding. Several recent studies have reported decreased early visual-evoked gamma oscillations in schizophrenia (Spencer et al., 2003 Spencer et al., 2004 Wynn et al., 2005 Spencer, 2008). However, deficits have also been found at lower... 

Tallon-Baudry C, Bertrand O, Peronnet F, Pemier J. 1998. Induced gamma-band activity during the delay of a visual short-term memory task in humans. J Neurosci 18 4244-4254. 

List of Abbreviations ABRs, acoustic brainstem responses cAMP, cyclic AMP DHBE, dihydro-P-ery-throidine ERPs, event-related potentials GBO, gamma band oscillation ISI, interstimulus interval MLA, methyllycaconitine MMN, mismatch negativity nAChR, nicotinic acetylcholinergic receptor NMDA,... 

Takahashi RN, Pamplona FA, Prediger RD (2008) Adenosine receptor antagonists for cognitive dysfunction a review of animal studies. Front Biosci 13 2614-2632 Tallon-Baudry C, Bertrand O, Delpuech C, Permier J (1997) Oscillatory gamma-band (30-70 Hz) activity induced by a visual search task in humans. J Neurosci 17 722-734 Taylor A, Saint-Cyr A, Lang A (1986) Frontal lobe dysfunction in Parkinson s disease the cortical focus of neostriatal outflow. Brain 109 845-883... 

Demiralp T, Herrmann CS, Erdal ME, Ergenoglu T, Keskin YH, Ergen M, Beydagi H. (2007) DRD4 and DATl polymorphisms modulate human gamma band responses. Cereb Cortex 17 1007-1019. 

Miiller MM, et al. Processing of affective pictures modulates right-hemispheric gamma band EEG activity. Clin Neurophysiol 1999 110(11) 1913—20. 

Luo Q, et al. Visual awareness, emotion, and gamma band synchronization. Cereb Cortex 2009 19(8) 1896-904. 

Crone, N.E., D.L. Miglioretti, B. Gordon, and R.P. Lesser. 1998. Fimctional mapping of human sensorimotor cortex with electrocorticographic spectral analysis. B. Event-related synchronization in the gamma band. Brain 121(Pt 12) 2301-2315. 

Germanium is very similar to Si, but its band gap is too small for many practical applications. Large crystals of ultra-high-purity Ge have been grown for use as gamma-ray detectors. In such crystals, the net concentration of... 

A definitive identification of the proteins in each peak is not possible, however, the elution times of the peaks at 13-14 min. and 15 min. are close to the times which would be expected for gamma-globulins and albumins, two of the principal classes of serum proteins. These data also indicate the loading capacity of this column with serum. More than 14 mg. of undiluted serum was injected before evidence of overloading in the form of band broadening and peak distortion was observed. 

Ito and Matsuda studied the y-radiolysis of 2-methyltetrahydrofuran (MTHF) solutions of diphenyl sulfone and dibenzothiophene-S,S-dioxide (DBTSD) at 77 K. They found that the radical anions of these sulfone compounds are formed and have intense absorption bands at 1030 nm and 850 nm, respectively. The blue glassy solution of y-irradiated diphenyl sulfone has absorption bands at both 1030 nm and 360 nm while the absorption spectrum of the benzenesulfonyl radical formed by UV irradiation of diphenyl sulfone solution at 77 K showed only a peak at 382 nm. Gamma-irradiated phenyl methyl sulfone solution showed an absorption band only at 385 nm. Consequently the appearance of the absorption bands in 800-1030 nm of diphenyl sulfone and DBTSD may suggest that the unpaired electron is delocalized on two phenyl rings. The same authors studied the radiolysis of MTHF solutions of disulfones (diphenyl and dihexyl disulfones). They found a blue coloring of the solution by the y-radiolysis of diphenyl disulfone and dihexyl disulfone due to absorption peaks at 695 nm and 690 nm respectively, besides smaller absorptions at 300-400 nm. Comparing these results to the previous observation, that phenyl methyl sulfone solution absorbs only at 398 nm, results in the conclusion that the absorption band at 690 nm is due to the linked two sulfone moieties. The authors found that substituents on the phenyl ring lead to shifts in the absorption maxima of the... 

The essential feature of this modified method is the addition of a small quantity of dye, D and C Violet No. 2 (l-hydroxy-4-p-toluinoanthraquinone), to the solution to be chromatographed. The dye forms a violet band on the column and serves as a visible marker for the position of the gamma isomer band on the column. 

X-ray and gamma radiation do not extend to the infrared region, and single band IR units are not affected by them. 

Color centers in topaz can be produced by irradiation with fast neutrons and gamma-rays (Platonov et al. 1989). It was found that luminescence bands are connected with such color centers, which may be detected by steady state and time-resolved spectroscopy (Marques et al. 2000). The detected luminescence bands have been connected with both impurities and structural changes. 

Any hydrogenated candidate for the unknown IR emission must exhibit sufficient stability to the harsh conditions of the interstellar medium, including bombardment by particles and ultraviolet and gamma radiation. Equally important, for a species to be considered a viable candidate, its spectra must reproduce two important characteristics found in most diffuse medium spectra. These are (a) that the 1,300 cm-1 band be more intense than the 880 cm-1 band (Williams 1996), and (b) that the spacing between it and the next main emission feature match the canonical interstellar spacing of 300 cm-1 (Hudgins and Allamandola 1999). 

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