Hi,
1. Do we need to know about different types of attention e.g. selective, focused, divided attention?
2. My textbook says that the EMG detects, amplifies and records the electrical activity of heart muscles? Isn't to supposed to measure muscles (in general)?
3. Is there any difference between muscle atonia and cataplexy? My textbook implies that cataplexy is paralysis when the person is conscious (is this just after waking) and that muscle atonia happens during REM sleep.
Hey there!
1. Based on the study design, I'm going to say no - there is no mention of the types of attention in the study design (in fact the only time 'attention' is mentioned is regards to the observational learning process) - so I think it is quite unlikely you'll be asked about the types of attention.
2. You're definitely right in questioning that! I'm confident that an EMG measures the electrical activity of the muscles in general, so I wouldn't use the textbook's explanation. (Which textbook is it by the way?)
3. Cataplexy is a sudden period of muscle weakness that generally occurs during the day and often occurs after 'strong emotions'. Muscle atonia, on the other hand, usually refers to the significant relaxation/paralysis of the skeletal muscles during REM. Therefore I'd say a key difference is that cataplexy occurs whilst conscious; whilst muscle atonia occurs whilst asleep (and specifically whilst in REM sleep).
Best of luck!