biopsych

• what is brain plasticity?


  brains ability to change and adapt due to experience
• what is functional recovery?


  transfer of functions from damaged areas to other areas after trauma
• what is neuronal unmasking?


  Increased excitability of previously silent or weak synapses in response to changes in neural activity or input.
• what did maguire find?


  london black cab drivers have a larger hippocampus due to their brain adapting and remembering all the routes
• how does an fMRI work?


  it detects blood flow and how oxygenated the blood is , the less oxygen the higher the reading due to its magnetic quality , this creates a 3d map of the brain.
• how does an EEG work?


  electrodes on your head detects action potential and identify wavelengths
• whats the difference between eeg and erg?


  eeg is general brain activity , erg is related to a specific stimulus
• what is post mortem ?


  looking at physical structure and chemical levels in brain
• spatial summation?


  fmri = good

  eeg/erg = bad
• temporal resolution?


  fmri = bad not real time

  eeg/erg = good real time
• invasive?


  fmri = no

  eeg/erg = no

  post mortem = yes
• what is a circadian rhythm?

  a 24 hour biological rhythm
• how does the sleep wake cycle work?

  light detected , sends impulse to SCN , controls circadian rhythm
• what is a endogenous pacemaker?


  body's internal clock
• what is a exogenous zeitgeber?


  External cue
• what are zeitgebers for sleep?


  light , melatonin and social cues
• what is an infradian rhythm?


  An infradian rhythm is a biological rhythm that occurs over a period longer than 24 hours, such as the menstrual cycle in females.
• what is an ultradian rhythm?


  A recurring biological rhythm that occurs more than once within a 24-hour period, typically lasting less than one hour.
• what is the endocrine system?


  A system of glands that produce and secrete hormones into the bloodstream to regulate various bodily functions.
• what is the pituitary gland?


  Endocrine gland located at the base of the brain that produces and releases hormones, master gland
• what is the thyroids role?


  Regulating metabolism by releasing thyroxine
• what does the adrenal medulla release?


  adrenaline and noradrenaline
• what does the adrenal cortex release?


  cortisol