31. Understanding Heart Rate Variability to Improve Therapy Outcomes
Release Date: 03/05/2025
Connection Therapy
In this episode of the Connection Therapy Podcast, Dr. Brenda Murrow explores how understanding animal behavior—especially in dogs—can deepen our insight into human communication and relationships. Dr. Murrow reflects on her own experience learning French and how it made her more aware of cultural nuances in language—particularly terms of endearment. Something as simple as the word “sweetheart,” which might feel universal, actually varies widely depending on context and culture. This realization led her to consider how observing other species could offer a fresh perspective on human...
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In this episode, Brenda takes a step back to reflect on several of her recent research-based episodes—and how what she’s learned is continuing to shape the way she practices. Revisiting past studies has helped her see just how much of what we do in the therapy room is grounded in awareness, relationship, and presence. Across these episodes, one theme kept surfacing: we’re always in communication, even when nothing is being said. Posture, silence, pacing, eye contact—these all play a role in how connection is built. Reflecting on that has reminded Brenda to slow down and stay attuned to...
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There are so many things that influence a therapy session—and not all of them are spoken. In this episode, Brenda is continuing the exploration into the less obvious dynamics that shape the therapeutic relationship. Encouragement, presence, attunement—they’re all part of the work. But there are also layers we don’t always consciously notice. One of those layers is mimicking. Brenda walks us through the research that supports this—multiple studies showing that when someone is subtly mimicked through facial expressions, posture, or gestures, they often report that the interaction felt...
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In therapy, we often listen closely to what’s being said—but what’s not being said can sometimes offer even more insight. A client may describe their week as “fine” or say they’re “managing,” but their body is heavy, their eyes are downcast, and their facial expressions suggest something else entirely. This kind of misalignment—between verbal language and nonverbal signals—isn’t uncommon. In today’s episode, Brenda explores what’s happening when someone’s internal emotional state doesn’t match how they present on the outside. Brenda brings in the foundational work...
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Brenda has often shrugged off the question, “Can horses really smell fear?” But in this episode, she takes a closer look—and the research is fascinating. When someone walks into their first equine session feeling nervous, it’s not just body language the horse is picking up on. There’s now scientific evidence that animals, including horses, can detect chemosignals—part of the odors released through human sweat that reflect emotional states like fear or calm. One study Brenda shares involves a group of 40 retrievers exposed to human body odor samples. The dogs responded differently...
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By exploring the latest research on how our nervous systems interact—whether between humans or across species—Brenda aims to provide therapists with the knowledge to deepen their connections with clients and improve therapeutic outcomes. In recent podcast episodes, Brenda has explored how physiological interactions, both between humans and animals, can impact therapeutic outcomes. Through research on heart rate variability (HRV) and the autonomic nervous system, she reveals new ways therapists can enhance client connections and regulation during therapy. Earlier episodes laid the...
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Mental and physical health don’t operate in isolation; they influence each other in profound ways. Stress, anxiety, and emotional distress often manifest physically, whether through muscle tension, changes in posture, or even pupil dilation. But what do we do with this information as therapists? Understanding these real-time physical responses can provide deeper insight into a client’s emotional state and the effectiveness of our interventions. Eye movements, pupil dilation, and facial expressions offer powerful clues about what’s happening internally. Research from nonverbal...
info_outlineHeart rate variability (HRV) is one of the most powerful yet often overlooked indicators of both mental and physical health. It’s closely linked to anxiety, depression, trauma, heart disease, and more. But for therapists, HRV offers even greater value—it provides insight into whether a patient is in shutdown, stuck in fight-or-flight mode, or able to engage and process emotions.
While traditional therapy often focuses on thoughts and behaviors, the nervous system plays a critical role in whether interventions actually succeed. A patient stuck in survival mode cannot engage in deep reflection or emotional processing, no matter how skilled the therapist is. Recognizing these physiological patterns allows clinicians to adjust their approach, making sessions more effective and creating a sense of safety for the patient.
In this episode, Brenda explains the science behind heart rate variability and connects it to Polyvagal Theory and practical therapy work. She also introduces biofeedback as a powerful tool to help patients strengthen their ability to shift between nervous system states.
By understanding HRV, therapists can better support their patients and enhance the effectiveness of their therapy sessions.
References:
Bradshaw, G. A., & Schore, A. N. (2007). How elephants are opening doors: Developmental neuroethology, attachment and social context. Ethology, 113, 426-436.
Deb Dana (2018). The Polyvagal Theory in Therapy: Engaging the Rhythm of Regulation. WW Norton & Company, Ltd.
Inna Khazan (2013). The Clinical Handbook of Biofeedback: A Step-by-Step Guide for Training and Practice with Mindfulness. Wiley-Blackwell.
Porges, S. W. (2009). Reciprocal influences between body and brain in the perception and expression of affect: A Polyvagal perspective. In D. Fosha, D. J., Siegel, & M. F. Solomon, M. (Eds.), The healing power of emotion: Affective neuroscience, development & clinical practice (pp. 27-54). New York, NY: Norton.