Hysteresis in a Three-Equation Model by Thomas R. Michl JEL E11, E12, O42

The development of synaptic function was examined at auditory nerve synapses in the rostromedial region of the cochlear nucleus magnocellularis of the chick. EPSCs were studied beginning at embryonic day 12 (E12), when synaptic transmission was first observed, through E19. The amplitude of evoked EPSCs produced by AMPA receptor (AMPA-R) increased 30-fold over this age range, whereas NMDA recept...

A T-lymphocyte-specific enhancer located 13 kb upstream of the murine CD4 gene was recently shown to be required for the developmentally regulated expression of CD4. We have previously identified three nuclear protein binding sites in this enhancer; one of these sites, CD4-3, is essential for expression and contains two E-box core motifs (CANNTG) adjacent to each other in the sequence TAACAGGTG...

It is commonly held that hearing generally begins on incubation day 12 (E12) in the chicken embryo (Gallus domesticus). However, little is known about the response properties of cochlear ganglion neurons for ages younger than E18. We studied ganglion neurons innervating the basilar papilla of embryos (E12-E18) and hatchlings (P13-P15). We asked first, when do primary afferent neurons begin to e...

Tinbergen Rules the Taylor Rule by Thomas R. Michl JEL E12, E52

A reanalysis of products formed after short-term incubation of sugarcane (Saccharum spp. hybrid cv H50-7209) vacuole preparations with uridine diphosphate [(14)C]glucose was performed. The results indicated that the ethanol-soluble substance previously identified as sucrose did not elute with sucrose when subjected to high performance liquid chromatography but had the same retention time as a d...

Male moth pheromone-detecting receptor neurons are known to be highly specific and very sensitive. We investigated physiological and behavioral responses to female sex pheromone components in male Ostrinia furnacalis moths (Lepidoptera: Crambidae). Using recordings from a cut-sensillum technique, trichoid sensilla could be grouped into four physiological types (1-4), according to the response o...

We investigate which Π2 sentences (over Hω2) that are consequences of MM also follow from BMM+NSω1 is precipitous. It turns out that admissible club guessing (acg), δ e12 = ω2, the club bounding principle (CBP), and ψAC as well as φAC follow from this weaker theory. This was known for δ e12 = ω2 and ψAC but not for φAC and acg. Additionally we show that if for all regular θ ≥ ω2 there is a semi...

Recent studies have identified a family of DNA-binding proteins that share a common DNA-binding and dimerization domain with the potential to form a helix-loop-helix (HLH) structure. Various HLH proteins can form heterodimers that bind to a common DNA sequence, termed the E2-box. We demonstrate here that E2-box-binding B-cell- and myocyte-specific nuclear factors contain subunits which are iden...