Wikipedia:Reference desk/Archives/Science/2020 November 4

= November 4 =

AC/DC
Imperial College is looking for volunteers to participate in a study of Hypoactive Sexual Desire Disorder (HSDD). Participants must be male, of full age, straight (as opposed to gay) and right-handed. What is the significance of dexterity? 81.147.142.101 (talk) 09:25, 4 November 2020 (UTC)
 * It is likely the researchers want to use neural imaging to compare the brain activity of participants with the disorder (while subjected to erotic stimuli) with a control group. As brain-activity patterns are different depending on handedness, they can eliminate one potentially confounding factor by selecting participants with the same handedness. By choosing right-handed, it will be easier to find volunteers meeting the requirements. --Lambiam 13:29, 4 November 2020 (UTC)
 * —is the request available online? Would it be possible to post a link so the wording could be seen? Bus stop (talk) 02:58, 5 November 2020 (UTC)

biology
how does the heart circulate blood around the body — Preceding unsigned comment added by 41.211.36.12 (talk) 19:57, 4 November 2020 (UTC)
 * See Circulatory system and Heart for what happens in humans and mammals. Graeme Bartlett (talk) 20:43, 4 November 2020 (UTC)