Motivation (Ch. 9) Flashcards
motives
forces that move us to act and not act in certain ways
what causes motives?
a desire to maintain homeostasis (altering behavior to maintain desired range of internal body environment), internal equilibrium
drive
internal tension from deviation in homeostasis.
what is drive’s relationship to motivation
it is the drive-reduction account of motivation
is homeostasis only for changes in real-time?
no, we can even anticipate changes in homeostasis that impact our actions as we prepare for them (ex. packing gloves for a ski trip even if hot outside).
pain matrix
distributed set of brain regions (including the amygdala) underlying sensory and emotional components of pain (associated response usually withdrawal)
pain’s motivators (avoidance)
avoidance of pain (specific info –> specific response).
pain’s motivators (seek)
necessary to endure pain to reach goals, pain proof trying (pain in running). NSSI (non-suicidal self-injury)
pain’s motivators (just byproduct)
unfortunate byproduct of achieving goals (studying –> headache)
escape from self, hypothesis
physical pain focuses someone’s attention on the injury and decreases awareness of their broader life, concerns outside the pain
incentives
goals seek to achieve
types of incentives
intrinsically rewarding: incentive part of the activity itself (ex. playing basketball). extrinsically rewarding: drawn not to activity itself (ex. getting paid for mowing)
why are incentives different than pain?
separate considerations for anticipating and receiving pleasure (used fMRI to confirm that different parts of the brain are associated with wanting and getting a reward)
glucostatic hypothesis
hunger and eating are regulated by body’s maintenance of blood glucose levels
dual-center theory
2 centers of hypothalmus regulate feelings of hunger and fullness (lateral hypothalamus – go) (ventromedial hypothalamus – stop)
how does the body regulate what we eat
stomach signals the impact of whether and what we eat (ex. need to increase protein, rat chooses protein over carbs)
lipostatic hypothesis
long-term energy balance. when fat stores deviate from target levels, the body acts to maintain homeostasis.
how does the body signal to the brain its full?
full fat cells secrete the hormone leptin in the bloodstream which is sensed by the hypothalmus.
body weight set point
caloric point in animals which the body maintains a certain weight, even with a change in dietary intake