O neurologista e escritor Oliver Sacks chama nossa atencao para a sindrome de Charles Bonnet -- na qual pessoas visualmente deficientes experimentam alucinacoes lucidas. Ele descreve as experiencias de seus pacientes com detalhes afetuosos e nos conduz a biologia desse fenomeno pouco divulgado Uma pesquisa da Faculdade de Ciencias Farmaceuticas (FCF) da USP mostrou que o consumo diario de uma castanha-do-brasil, conhecida por castanha-do-para, recuperou a deficiencia de selenio e ainda teve efeitos positivos sobre as funcoes cognitivas de idosos com comprometimento cognitivo leve (CCL), considerado um estagio intermediario entre o envelhecimento normal e demencias, como a Doenca de Alzheimer.http://www.usp.br/agen/?p=200134 Lindo e emocionante documentario sobre o poder da utilizacao da musica em pacientes com demencia.Assista abaixo: Cochrane Database Syst Rev. 2015 Jun 15;6:CD006142.Transcutaneous electrical nerve stimulation for acute pain.Johnson MI1, Paley CA, Howe TE, Sluka KA.AbstractBACKGROUND:This is a second update of a Cochrane Review originally published in Issue 2, 2009. Transcutaneous Electrical Nerve Stimulation (TENS) is a non-pharmacological agent, based on delivering low voltage electrical currents to the skin. TENS is used by people to treat a variety of pain conditions.OBJECTIVES:To assess the analgesic effectiveness of TENS, as a sole treatment, for acute pain in adults.SEARCH METHODS:We searched the following databases up to 3 December 2014: the Cochrane Central Register of Controlled Trials (CENTRAL), in the Cochrane Library; MEDLINE; EMBASE; CINAHL; and AMED. We also checked the reference lists of included trials.SELECTION CRITERIA:We included randomised controlled trials (RCTs) of adults with acute pain (< 12 weeks) if they examined TENS given as a sole treatment and assessed pain with subjective pain scales. Trials were eligible if they compared TENS to placebo TENS, no treatment controls, pharmacological interventions or non-pharmacological interventions. We excluded trials on experimental pain, case reports, clinical observations, letters, abstracts or reviews. Also we excluded trials investigating the effect of TENS on pain during childbirth (labour), primary dysmenorrhoea or dental procedures. Studies where TENS was given with another treatment as part of the formal trial design were excluded. We did not restrict any articles based on language of publication.DATA COLLECTION AND ANALYSIS:Two review authors independently assessed study eligibility and carried out study selection, data extraction, 'Risk of bias' assessment and analyses of data. We extracted data on the following: types of participants and pain condition, trial design and methods, treatment parameters, adverse effects, and outcome measures. We contacted trial authors for additional information if necessary.MAIN RESULTS:We included 12 trials in the original review (2009) and included no further trials in the first update (2011). An additional seven new trials met the inclusion criteria in this second update. In total, we included 19 RCTs involving 1346 participants at entry, with 11 trials awaiting classification either because the full text was unavailable or information in the full text failed to clarify eligibility. We excluded most trials because TENS was given in combination with another treatment as part of the formal study design or TENS was not delivered using appropriate TENS technique. The types of acute pain included in this Cochrane Review were procedural pain, e.g. cervical laser treatment, venepuncture, screening flexible sigmoidoscopy