Psyche
soul
Logos
to study
Wilhelm Wundt (1870s)
combines the disciplines of philosophy and physiology
Psychological Research
correlation
Correlational Research
Correlational vs. Experimental Research
Experimental Research
Experimental Research
Bias in Research
Experimenter bias:
- double blind procedure
Components of the Neuron
(Dendrites)
receive information from other neurons
Components of the Neuron
(cell body)
creates transmitter molecules
Components of the Neuron
(Axon)
Graded Potentials
Stimulation of the nerve membrane can open ion channels in the membrane
Graded Potentials NA+
NA+ ions flowing in will depolarize the membrane (movement from -70 mV to say -60 mV
Graded Potentials K+
K+ ions flowing out of membrane will hyperpolarize the membrane (-70 mV to say -90 mV)
The Action Potential
Graded potentials:
- generated at the dendrites
-are conducted along the membrane to the axon hillock
- If summated activity at the axon hillock raises the membrane potential past threshold
- an action potential (AP) will occur
Neurotransmitters
Autonomic Nervous System
(two systems)
The Autonomic Nervous System (ANS) has two divisions:
- Sympathetic: Emergency system
- Parasympathetic: Vegetative functions (e.g. digestion)
Middle View of Human Brain
(Medulla)
Controls heart rate, respiration
Midline View of Human Brain
(Cerebellum)
Coordinates smooth movements, balance, and posture
Midline View of Human Brain
(Pons)
Involved in the control of sleep
Limbic System Functions
Limbic System Functions