Figure 3.1 introduces three brain imaging modalities and their distinct contributions to understanding brain function: PET scan (positron emission tomography), CT scan (computerized tomography), and fMRI (functional magnetic resonance imaging).
These imaging methods provide scientists with insight into different aspects of how the human brain functions, highlighting that anatomy, physiology, and function can be examined through complementary tools.
Chapter Outline (3.1–3.5)
3.1 Human Genetics
3.2 Cells of the Nervous System
3.3 Parts of the Nervous System
3.4 The Brain and Spinal Cord
3.5 The Endocrine System
Analogy: Understanding by taking something apart
The chapter invites you to think about how a device is assembled and how its internal workings differ from its outward user interface.
Everyday example: when we adjust the volume on a mobile phone, we typically don’t think about microchips and circuitry; we focus on achieving the right sound level.
This analogy illustrates a central goal of psychology: to connect the inner workings of the body (neural activity, biochemical processes) with outward behavior (thoughts, actions, experiences).
Psychological aim: linking biology to behavior
Psychologists seek to connect physiological and anatomical processes to observable behavior.
The chapter aims to explain the biological mechanisms that underlie behavior, establishing the physiological and anatomical foundations for many areas of psychology.
Foundations and relationships
The physiological and anatomical foundations discussed in this chapter underpin many psychological concepts and topics.
Genetics play a role in shaping both physiological traits (how the body operates) and psychological traits (cognitive, emotional, and behavioral tendencies).
Learning goals stated in the excerpt
You will learn about the structure and function of the nervous system.
You will learn how the nervous system interacts with the endocrine system.
Why this matters (real-world relevance and context)
By understanding different imaging techniques and the nervous system’s structure, students can better grasp how brain processes relate to behavior and mental processes.
The link between genetics, physiology, and psychology highlights the biological basis of behavior, informing research, diagnosis, and potential interventions.
Ethical, philosophical, and practical implications
The excerpt does not explicitly discuss ethical, philosophical, or practical implications.
However, the framing implies that uncovering the brain’s inner workings has implications for how we understand responsibility, privacy, and the application of neuroscience in real-world contexts.
Numerical, formulas, and equations
None are provided in this excerpt.
Key terms to remember from Page 1
PET: positron emission tomography
CT: computerized tomography
fMRI: functional magnetic resonance imaging
Nervous system
Endocrine system
Genetics
Page 2
Continued learning objectives
You will become familiar with the structure and function of the nervous system.
You will learn how the nervous system interacts with the endocrine system.
Context and connection to Page 1
The goals stated on Page 2 reiterate the foundational learning outcomes introduced on Page 1, emphasizing an integrated view of neural and hormonal systems and their roles in behavior and physiology.
Ethical, philosophical, and practical implications
As noted on Page 1, explicit discussion is not present in this excerpt; future sections may broaden these topics.