PSYC 1000 Lecture 11: Lecture 11

• School: University of Guelph
• Department: Psychology
• Course: PSYC 1000
• Professor: Benjamin Giguere

Document Summary

In psychology, it often refers to a person"s subjective awareness of internal and external stimuli, including thoughts, perceptions, experiences and self-awareness. Automatic variations: such as daydreaming, drowsiness, sleep and dreams. Physiological variations: such as hallucinations, lack of oxygen, orgasms. Psychological variations: such as deprivation, hypnosis, mindfulness meditation. Pace of 90 minutes: approximately every 90 minutes we pass through five stages of sleep. Stages are associated with different brain waves: vary in frequency, amplitude and regularity, are measured with an electroencephalogram. Beta waves: high frequency, low amplitude: often associated with irregular waves. Alpha waves: lower frequency, higher amplitude than beta waves: more irregular than beta waves. Theta waves: lower frequency and larger amplitude than alpha waves: breathing. Delta waves: very low frequency, high amplitude and regular: function: memory, consolidation; growth hormones. After reaching stage 4 cycle returns to the starting point: brain activity increases; beta and alpha waves reappear, heart rate and respiration increase.