Rock influences spatial memory in adult rats, while classical music do not

Music can be used as a therapeutic tool and has several effects in cognitive and physiologicalfunctions. The aim of this work was to evaluate the effect of different musical pieces in spatialmemory in adult male rats. A T maze was used to investigate spatial memory, with 2h and6h inter trial interval between training and testing phases. Before training, animals wereexposed to an active or relaxing musical stimulus corresponding to rock and classical pieces.It was found that in the experiment with 2h interval, animals explore more the novel arm incomparison with the other arm, which indicated that animals still had a good spatial memory.This was not observed in rats that were exposed to the relaxing rock piece, which couldindicate that this stimulus diminished memory. With the 6h interval the rats explored botharms equally, except animals that were exposed to the activating rock piece of music whichindicated a slightly enhance in memory. Thus, there were found different effects of musiccorresponding to the time of interval and the stimulus characteristics. This data providesinformation to use music as a possible treatment to modulate memory.Fil: Psyrdellis, Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina. Universidad Nacional de Córdoba; ArgentinaFil: Diaz Abrahan, Veronika Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina. Universidad Nacional de Córdoba; ArgentinaFil: Cetratelli, Camila. Universidad de Buenos Aires; ArgentinaFil: Justel, Nadia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina. Universidad de Buenos Aires; Argentin

Tomographic Simulations of Accretion Disks in Cataclysmic Variables - Flickering and Wind

Both continuum and emission line flickering are phenomena directly associated with the mass accretion process. In this work we simulate accretion disk Doppler maps including the effects of winds and flickering flares. Synthetic flickering Doppler maps are calculated and the effect of the flickering parameters on the maps is explored. Jets and winds occur in many astrophysical objects where accretion disks are present. Jets are generally absent among the cataclysmic variables (CVs), but there is evidence of mass loss by wind in many objects. CVs are ideal objects to study accretion disks and consequently to study the wind associated with these disks. We also present simulations of accretion disks including the presence of a wind with orbital phase resolution. Synthetic H-alpha line profiles in the optical region are obtained and their corresponding Doppler maps are calculated. The effect of the wind simulation parameters on the wind line profiles is also explored. From this study we verified that optically thick lines and/or emission by diffuse material into the primary Roche lobe are necessary to generate single peaked line profiles, often seen in CVs. The future accounting of these effects is suggested for interpreting Doppler tomography reconstructions.Comment: 9 pages, 9 figure

Musical Improvisation: Giving a Look Between Music Therapy and Neuroscience

La improvisación musical es un concepto abordado desde diferentes disciplinas y campos artísticos.Es una técnica de uso común en el ámbito musicoterapéutico, pero su desarrollo teórico desde las neurociencias parece ser un campo poco investigado. El objetivo de esta revisión es desarrollar la temática desde la disciplina musicoterapéutica y su inserción en el campo de la neurorrehabilitación, para lo cual se describirán los correlatos neuroanatómicos y los mecanismos cognitivos que caracterizan a esta habilidad creativa, y que la convierten en una técnica destacable en la rehabilitación de pacientes que han sufrido un daño neurológicoMusical improvisation is a technique commonly used in the field of music therapy, but its theory is not well-researched in neuroscience. This paper focuses on improvisation in music therapy and its inclusion in the field of neuro-rehabilitation. This research describes neuro-anatomical correlates and cognitive mechanisms that characterize this creative skill and make it a remarkable technique for rehabilitation patients who have suffered neurological damage.Fil: Diaz Abrahan, Veronika Mariana. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentina. Universidad Nacional de Córdoba; ArgentinaFil: Justel, Nadia. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Investigaciones Médicas. Universidad de Buenos Aires. Facultad de Medicina. Instituto de Investigaciones Médicas; Argentin

Keynote speakers

Web and broadcast: the birth of exciting technologies / Shadi Abou-Zahra (W3C Web Accessibility Initiative). Chair: Pilar Orero ; Diversity and representation in children's media / Mariana Diaz-Wionczek (NYU's Psychology Department). Chair: Anna Matamala (Universitat Autònoma de Barcelona

Técnicas e instrumentos químico-farmacéuticos en México (1849-1925)

ArtículoDurante el siglo xix y las primeras décadas del xx, la investigación científica desarrollada en México giraba principalmente en torno al estudio de las plantas medicinales. Se analizan los instrumentos y técnicas utilizados durante este periodo por los farmacéuticos en sus labores de docencia e investigación. Su empleo estaba relacionado con la realización de análisis químicos de acuerdo con los procedimientos de las escuelas de farmacia europeas y se procuraba especialmente la búsqueda de alcaloides de utilidad terapéutica. Este interés de los farmacéuticos en el desarrollo de la enseñanza y la práctica del análisis químico fue fundamen- tal y eventualmente permitió el establecimiento de la carrera de químico farmacéutico biólogo

Brucelosis, una zoonosis frecuente

En 1968 la Organización Mundial de la Salud afirmó que la brucelosis era responsable de más enfermedades, miserias y pérdidas económicas que cualquier otra enfermedad animal conocida que afecte a los humanos. Esta enfermedad ejemplifica la falta de interacción de los sectores de salud pública y veterinaria, haciendo de esta infección una de las zoonosis más frecuentes en el mundo, con especial importancia en los países mediterráneos de Europa y África, el Oriente Medio, América Central y América del Sur, Asía Central, la India y México.La brucelosis una enfermedad zoonótica causada por bacterias del género Brucella. Es un ejemplo de la falta de interacción de los sectores de salud de las ramas pública y veterinaria. Este artículo revisa las generalidades de esta enfermedad y sus antecedentes, así como la estructura celular bacteriana, la fisiopatología y las vías de contagi

Studies of recruitment in the great skua

This thesis examines different variables affecting recruitment, and provides evidence of recent events affecting a seabird colony. Fieldwork was conducted during 2003-05 in the island of Foula, Shetland. Foula holds the largest colony of great skuas Stercorarius skua in the world; although numbers of breeding pairs in the colony increased rapidly from 1900-70, recently numbers have been decreasing. Data were collected by marking non-breeders and taking individual measures, individuals were followed in subsequent seasons to record their behaviour. An extended database was used to determine how long-term effects of variables such as hatching date, food availability and climate change affect the process of recruitment. The results show that food availability is related to breeding success and early hatching, as well as the probability of returning to the colony to breed. The variable used to quantify climate change (NAO winter index) was not related to recruitment, however it is suspected to influence food abundance. Contrary to expectation, individual quality did not have an effect on the probability of breeding for the first time, and there was no difference in body condition between potential recruits and established breeders; however historic data suggest a difference. The current situation faced by great skuas in the Foula colony may be a determined for the changes in recruitment rates as well as for the parameters that determine the recruitment process. Compared to two decades ago, numbers of pre-breeders have decreased substantially which may give evidence of density dependent effects preventing the addition of new recruits to the colony

PENGARUH RASIO LIKUIDITAS, KUALITAS ASSET, SENSITIVITAS, EFISIENSI DAN SOLVABILITAS TERHADAP RETURN ON ASSET (ROA) PADA BUSN DEVISA

This study aims to analyze how the influence of Liquidity Ratio, Asset Quality, Sensitivity, Efficiency and Solvency to Profit on Assets. The population of this research is Private National Bank Foreign Exchange during the period 2013-2017. The sample of this research consists of three Private Foreign Exchange National Banks namely PT. Bank Agris, Tbk, PT. Bank Bumi Arta, Tbk and PT. Bank Index Selindo. Sample selection using purposive sampling and data source used in this research is secondary data. The results of this study indicate that the Loan to Deposit Ratio has a significant positive effect on Return On Asset, Investing Policy Ratio has a significant positive effect on Return On Asset, Non Performing Loan has a negative effect that is not significant to Return On Asset, Non-earning Asset has a negative significant effect, the Interest Rate Risk has a significant positive or negative effect on the Return On Asset, Net Open Position has positive or negative influence on the Return On Asset, Fee Based Income Ratio has no significant negative effect on Return On Asset, Primary Ratio has significant positive effect against Return On Asset. The coefficient of determination showed by 60.9% caused by the variables studied were LDR, IPR, NPL, APB, IRR, PDN, FBIR and PR, while 39.1% influenced by other factors outside of research. Keywords: Liquidity, Asset Quality, Sensitivity, Efficiency, Solvabilit