Lecture 1 – Introduction

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7 Terms

1
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What is the first step in the perceptual process?

Environmental stimulus.

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What is transduction?

Transformation of environmental energy into electrical energy by sensory receptors.

3
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Sensory receptors

Cells specialized to respond to specific type of environmental energy

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What happens during neural processing?

Signals are transmitted and changed along the way in interconnected circuits of neurons.

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What is the cycle of perception to action?

Electrical signals transformed into conscious awareness, recognition, and then behavioral response.

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Are all stimuli external?

No, internal factors like hunger and fatigue are also stimuli.

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Intracortical processing

Transforms sensory data into percepts of sight, sound taste smell and touch etc.