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Perception of stimuli

Perception of stimuli. By Martin Samaj IB study guide: 133. Perception and Stimulus. Perception – the act of apprehending by means of the senses of the mind Stimulus – something causing or regarded as causing a response

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Perception of stimuli

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  1. Perception of stimuli By Martin Samaj IB study guide: 133

  2. Perception and Stimulus • Perception – the act of apprehending by means of the senses of the mind • Stimulus – something causing or regarded as causing a response • Humans have a large variety of sensory receptors which enable us to perceive a wide range of stimuli

  3. Examples of receptors

  4. Structure of the human ear

  5. Hearing • Hearing is one of the 5 major senses (hearing, touch, smell, sight, taste) that allows us sound perception • Because of how our auditory systems are constructed a typical human being is able to perceive sounds in the frequency range from 20 – 20 000 hertz.

  6. Perception of sound • Eardrum • Sound waves cause the ear drum to vibrate. The role of the eardrum is to pick up sound vibrations from the air and send them to the middle ear • Bones of the middle ear • There is a series of small bones in the middle ear called ossicles. All are in contact with each other. They transmit vibrations from the eardrum to the oval window • Oval window • A membranous structure that transmits the sound waves to the fluid filling the inside of cochlea • Hair cells in the cochlea • Hair cells enable the transmission of messages across synapses and into the brain through the auditory nerve

  7. Thank you for your attention

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