exam 3 concepts

2 ways auditory info is processed to localize the origin

difference in arrival time and intensity

differences between APs in hair cells vs other neurons

hair cells have graded potentials, other neurons are all or nothing APs, both generate signals

what are the 3 canals found in the cochlea

scala media, scala tympani and scala vestibuli

what neurotransmitter and receptor are found at the neuromuscular junction

ACh and nicotinic ACh receptor

what brain structures control movement

cerebellum, basal ganglia, motor cortex and brainstem

surgical damage to what 2 regions of the brain can improve parkinsons symptoms

globus pallidus internus and subthalamic nucleus

what is the rate law

intensity of a stimulus is related to the frequency of APs, stronger stimuli=faster firing

what types of axons carry pain and touch info

pain- Abeta fibers, touch- A and C fibers

what were the findings from Merzenich and Jenkins work on dependent plasticity

cortical maps change with experience

what hormones are released by the anterior and posterior pituitary gland

anterior- growth hormone, prolactin, thyroid stimulating hormone

posterior- oxytocin and vasopressin

what causes diabetes insipidus and how is it treated

caused by a adh defiency that leads to excessive urination and thirst

treated by enhancing kidneys response to ADH