⚖️ Brain & Motivational States
Homeostasis, Rhythms & Drives
⚖️ Homeostasis - Balance System
⚖️
HOMEOSTASIS
Internal Balance
⬇️
🎯
Set Point
Optimal Level
↔️
📊
Feedback
Monitor
↔️
⚙️
Correction
Adjust
🌡️ Temperature Regulation
🥵
Too Hot
➡️
🧠
Preoptic Area
Hypothalamus
➡️
💦
Sweating
Vasodilation
🥶
Too Cold
➡️
🧠
Preoptic Area
Hypothalamus
➡️
🥶
Shivering
Vasoconstriction
⏰ Circadian Rhythms
☀️
Light
Retina
➡️
⏰
SCN
Master Clock
➡️
🌙
Pineal
Melatonin
⬇️
🌅
Wake Cycle
Active
🌡️
Temp Cycle
Peak/Trough
🧪
Hormone Cycle
Release
😴
Sleep Cycle
Rest
🍽️ Hunger & Feeding
🛑
VMH
Satiety Center
▶️
LH
Hunger Center
⬇️
🍬
Glucostatic
Blood Sugar
🧈
Lipostatic
Body Fat
🫃
Gastric
Stomach Signals
🧬
CCK
Gut Peptide
⬇️
⚠️
VMH Lesion
→ Obesity
⚠️
LH Lesion
→ No Eating
💧 Thirst Regulation
💧⬇️
Dehydration
Water Loss
➡️
🧠
Osmoreceptors
Hypothalamus
➡️
🫘
Kidneys
Renin
⬇️
🧬
Angiotensin
Formed
➡️
🥤
Drink!
Fluid Intake ⬆️
😴 Sleep-Wake Cycle
☀️
AWAKE
RAS Active
↔️
😴
NREM
Deep Sleep
↔️
💭
REM
Dreams
⬇️
⚡
RAS
Arousal
🌉
Pons
REM Control
🧪
5-HT
Sleep
⚡
NE
Wake
⚠️ Eating Disorders
🍔
Obesity
Excess Intake
🚫
Anorexia
Self-Starvation
🔄
Bulimia
Binge-Purge
⬇️
🧬
Genetic
🧪
Metabolic
🧠
Neural
💭
Psychological
⬅️ Neurochemistry
🏠 PSYP610
Higher Functions ➡️
⬆️
🏠
⬇️