Auditory discrimination of tone-pulse onsets

Two experiments are reported in which difference limens (DLs) were measured for onset times of a 1000-Hz tone pulse. An adaptive two-alternative forced-choice procedure and (mostly) well-trained subjects were used. In the first experiment, DLs were measured for the rise time of linear onset ramps at rise-time values between 10 and 60 msec. The DLs follow Weber's law up to a rise time of about 50 msec, and do not support the notion that rise times are perceived in a categorical manner. In the second experiment, DLs were obtained for linear, exponential, and raised-cosine onset envelopes at rise-time values between 10 and 40 msec. When energy differences in the critical band around 1000 Hz are computed for just-discriminable onsets, values between 0.7 dB (10-msec rise time) and 0.3 dB (40-sec rise time) are found. These equivalent intensity DLs show the same "near miss to Weber's law" behavior as do intensity DLs for pure tones.     

Propionibacterium granulosum KP-45 in the treatment of subacute sclerosing panencephalitis

3 groups of patients, who suffered on SSPE (without treatment, with isoprinosine therapy, combined treatment with propionibacterium granulosum and isoprinosine) are compared. The results show a favourable effect of the combined treatment in a part of the patients. They are discussed in detail.     

Science in Poland

The Nencki Institute in Warsaw was founded in 1918 to honor one of Poland’s most distinguished biochemists, Marceli Nencki. Since its inception, the institute has evolved from a confederation of privately supported laboratories to a center of research productivity intimately associated with the Polish Academy of Sciences. Early relations with Pavlov’s laboratory laid the foundation for the emergence of a Polish School of Neurophysiology under the leadership of Jersy Konorski. The impact of Konorski and his colleagues has transformed the interpretation of conditioning to include a systematic physiologic basis that more adequately considers the psychology of learning processes. The prestige of the Nencki Institute within contemporary Eastern European and Soviet science was achieved despite the economic pressures on a new nation and its total devastation of World War II. Moreover, the more than 60 years of scientific work in an independent Poland have provided a critical transition between Eastern and Western research efforts, and the Nencki Institute has filled a leading role in facilitating communication among scientists.     

„Logika prawnicza”, logika dla prawników,logiczne problemy prawoznawstwa

Allatum est die 30 Octobris 1964     

O zasięgu twierdzenia Lindenbauma o nadsystemach zupełnych

Allatum est die 19 Septembris 1960