Mechanism Of Human Behavior
Mechanism of
Human Behavior
RECEIVING
MECHANISM
RECEPTOR
an organ or cell able to respond to light, heat, or other external stimulus and transmit a signal to a sensory nerve. a region of tissue, or a molecule in a cell membrane, that responds specifically to a particular neurotransmitter, hormone, antigen, or other substance.
EYES & VISUAL
SENSATION
The human eye is capable of seeing only a tiny portion of the electromagnetic spectrum, a portion known as visible light.
The eye is a highly intricate structure with over 100 million receptors that emit neural impulses when stimulated by light. More specifically, they respond to the
“wavelengths” of light.
EARS & THE AUDITORY
SENSATION
The apparatus for the ears is mechanical up to the point where sounds are transduced into neural impulses. The sound waves that stimulate our ears are produced when, for example, something in the world around you clicks, rings, vibrates, or scrapes against or hits something else. Each produces cyclical displacements of molecules in the air — that is, contractions and expansions of the air, you can get a clear idea of how sound is produced if you remove the front cover of a speaker system, turn up the volume, and watch what the bass and midrange speakers do.
PARTS OF THE EAR
Outer Ear
•
•
•
Auricle (cartilage covered by skin placed on opposite sides of the head)
Auditory Canal (also called the ear canal)
Eardrum Outer Layer (also called the tympanic membrane)
The outer part of the ear collects sound.
Sound travels through the auricle and the auditory canal, a short tube that ends at the eardrum. Middle Ear
Eardrum
Cavity
(also called the tympanic cavity)
Ossicles (3 tiny bones that are attached)
Malleus (or hammer) – long handle attached to the eardrum
Incus (or anvil) – the bridge bone between the malleus and the stapes
Stapes (or stirrup) – the footplate; the smallest bone in the body
Sound entering the outer ear travels through the middle ear
and
Human Behavior
RECEIVING
MECHANISM
RECEPTOR
an organ or cell able to respond to light, heat, or other external stimulus and transmit a signal to a sensory nerve. a region of tissue, or a molecule in a cell membrane, that responds specifically to a particular neurotransmitter, hormone, antigen, or other substance.
EYES & VISUAL
SENSATION
The human eye is capable of seeing only a tiny portion of the electromagnetic spectrum, a portion known as visible light.
The eye is a highly intricate structure with over 100 million receptors that emit neural impulses when stimulated by light. More specifically, they respond to the
“wavelengths” of light.
EARS & THE AUDITORY
SENSATION
The apparatus for the ears is mechanical up to the point where sounds are transduced into neural impulses. The sound waves that stimulate our ears are produced when, for example, something in the world around you clicks, rings, vibrates, or scrapes against or hits something else. Each produces cyclical displacements of molecules in the air — that is, contractions and expansions of the air, you can get a clear idea of how sound is produced if you remove the front cover of a speaker system, turn up the volume, and watch what the bass and midrange speakers do.
PARTS OF THE EAR
Outer Ear
•
•
•
Auricle (cartilage covered by skin placed on opposite sides of the head)
Auditory Canal (also called the ear canal)
Eardrum Outer Layer (also called the tympanic membrane)
The outer part of the ear collects sound.
Sound travels through the auricle and the auditory canal, a short tube that ends at the eardrum. Middle Ear
Eardrum
Cavity
(also called the tympanic cavity)
Ossicles (3 tiny bones that are attached)
Malleus (or hammer) – long handle attached to the eardrum
Incus (or anvil) – the bridge bone between the malleus and the stapes
Stapes (or stirrup) – the footplate; the smallest bone in the body
Sound entering the outer ear travels through the middle ear
and