Post on 19-Jun-2015
Sensory Signal Processing
Information
Sensation Perception
Attributes of a Stimulus
1. Modality
2. Location
3. Timing
4. Intensity
Transduction of sensory stimuli and Labeled Line Code
Stimulus Location
Weber’s Law of “Just Noticeable Difference”
Sensory thresholds
Stimulus intensity is encoded by frequency of AP
Sensory Processing
Somatic Sensory Signal Processing
Somatic Sensory Receptors
Excitation of sensory nerve
Transduction of sensory stimuli and Labeled Line Code
Types of nerve fiber - Principle of Connectional Specificity
Dermatomes
Trigeminal nerve
Central Pathway
Thalamus
Sensory Cortex
Thalamocortical projection
Integration of tactile information by Cortex
Each region of the somatic sensory cortex receives inputs from primarily one type of receptor.
Two Point Discrimination
Two Point Discrimination
Shape and Size Sensation
Spatial and Temporal Summation
Vibration Sense
Pain Signal Processing
Types of Pain
Pain Perception
Pain Pathway
Nociceptive Components of the Thalamus and Cortex
Gate control theory
Pain Modulation
The Placebo Effect
Sensitization
Visceral Pain
Phantom Limbs and Phantom Pain