Objective: Describing general structure of Cerebrum and Cerebral Cortex.

• Gyri: ridge
• Sulci: groove
• Fissure: deep groove
• Sensation (Raw Data) vs Perception (interpretation)
• CNS (Brain, Spinal Cord) vs PNS (Branch off from CNS)
• Parasympathetic (Rest/Digest) vs Sympathetic (Fight/Flight) Nervous system
• Nervous system structure:
  • Dendrite
  • Cell body (soma)
  • Axon (nerve fiber)
  • Nodes of Ranvier
  • Synapses (one axon to another neuron’s dendrite gap)
  • Touch receptor
• Electrical vs Chemical synapses:
  • Directly connected vs gap
  • Faster no gain vs slower with gain
  • typically bidirectional vs usually unidirectional
• Glial Cells:
  • non neuronal, form myelin, maintain homeostasis
• Types of Neurons:
  • Unipolar (insects)
  • Bipolar (rare, like retina)
  • Pseudo-unipolar
  • Multi-polar (most common)
• Sensort neurons:
  • thermoreceptors
  • photoreceptors
  • chemoreceptors
  • mechanoreceptors
• Action Potentials:
  • temporary shift from negative to positive membrane potential
• Localisation vs distributed processing
• Feature detectors:
  • certain neuron populations respond to specific types of stimuli/features
• Neural code: specificity and distributed coding
• Thalamus: Control and relay center for sensory info
• Hypothalamus:
  • Intermediary: nervous, endocrine systems
  • Control system of ANS
  • Regulates basics survival mechanisms