A Neural Model of Behavior

Lesson 2

Behavior

Any activity that can be objectively recorded

Macro to Micro

groups of individuals

individual

systems

cell group

cell

ion ~

Regulation of Behavior

Behavior: function of specialized cells sensory

transduction neurons

info processing effectors

muscles glands ~

Neurons

Basic functional unit of Nervous System information processing

Transmits Integrates Stores

Regulation behavior homeostasis ~

Shorthand for neuron

+ = excitation

- = inhibition ~

synapse

++ + +

A model of behavior

Sensory Cell

Sensory Neuron

Motor Neuron

Interneuron

Effector

+

++ + +

A model of behavior

-

feedback Positive - excitatory (+) Negative - inhibitory (-) ~

REGULATION

normal range

SYSTEM ACTIVITY

Maximum

Minimum

+++

-

Psychoactive Drugs Alter behavior

including...consciousness, emotions, perceptions

By altering neural transmission within between

Drugs modulate normal function increase or decrease only excite or inhibit ~