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THE RECIPROCAL INTERACTION
MODEL OF SLEEP CYCLE CONTROL
Allan Hobson
Department of Psychiatry
Harvard Medical School
RECIPROCAL INTERACTION
Pontine NREM-REM Oscillator
Aminergic-Cholinergic
Neuronal Interaction
Role of Hypothalamus
EXTRACELLULAR MICROELECTRODE
RECORDING TECHNIQUE
Ralph Gerard (1953)
David Hubel (1959)
Edward Evarts (1960)
Edward Evarts
Cortical Motor Neuron Discharge
Roger Broughton
Nightmares and Sleep Walking
Adrian Morrison
PONTINE NEURONS
Giant Cells-Glutaminergic
REM Off Cells-Aminergic
REM On Cells-Cholinergic
GIANT CELLS
Project to Oculomotor Neurones
Project to Spinal Cord
Sensorimotor Integration
REM OFF CELLS
Noradrenergic-Locus Coeruleus
Serotonergic-Raphē Nuclei
Helen Baghdoyan and Ralph Lydic
Dorsal Raphe Nucleus Neuron Discharge
Cell Discharge
Cycle Averaging
RECIPROCAL INTERACTION MODEL
Allan Hobson and Robert McCarley
Reciprocal Discharge Patterns
REM OFF
REM ON
WAKE
NON REM
REM
Synaptic Model
REM On
REM Off
MATHEMATICAL
MODEL
dx/dt=ax-bxy
dy/dt= -cy+dxy
FUNCTIONAL SIGNIFICANCE
Converts Genetic Blueprint into
Dynamic Program for Brain